Cited by 34Gambling Behavior and TreatmentsSubstance Abuse Treatment and OutcomesImpact of Technology on Adolescents

Internet gambling in problem gambling college students

Open access
Petry, Nancy M., Gonzalez-Ibanez, Angels·2015·Journal of Gambling Studies

Abstract

Internet gambling is popular in college students and associated with problem gambling behaviors. This study evaluated Internet gambling in 117 students participating in study evaluating brief interventions to reduce gambling; the brief interventions consisted of minimal advice, motivational enhancement therapy, and cognitive-behavioral therapy (1–4 sessions). Compared to their counterparts who did not gamble via the Internet (n = 60), those who reported recent Internet gambling (n = 57) wagered in greater frequencies and amounts and reported missing school more often and more problems with family and anxiety due to gambling. Recent Internet gamblers demonstrated similar reductions in gambling over time and in response to the brief interventions as non-Internet gamblers. These data suggest that Internet gambling is common in problem gambling college students, and students who wager over the Internet can benefit from brief interventions. © 2013 Springer Science+Business Media New York.

Integrity signals

Registry

Crossref · 10.1007/s10899-013-9432-3

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

21 of 105 cited sources checked · 10 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    Internet gambling is associated with problem gambling behaviors.

    “Internet gambling is popular in college students and associated with problem gambling behaviors.”
    • Also stated in: § Abstract · boosted
      “Regardless of the population studied, Internet gambling is ubiquitously associated with high rates of problem gambling behaviors.”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites Griffiths et al., 2009 source
    • cites Petry & Weinstock, 2007 source
  • Premisecitation

    In samples of patients entering gambling treatment clinics, less than 1% indicated that the Internet is their preferred modality of gambling.

    “In samples of patients entering gambling treatment clinics, less than 1% indicated that the Internet is their preferred modality of gambling (Álvarez-Moya et al., 2010; Petry, 2003a; Petry et al., 2006; Petry, Weinstock, Lederwood, & Morasco, 2008).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Álvarez-Moya et al., 2010 source

      The Participants section (page not available) describes patients referred for gambling assessment and treatment and lists their main gambling problems, but gives no figure for Internet gambling as a preferred modality. Searches for “Internet preferred modality” and “online gambling” found no passage addressing the claimed less-than-1% rate. (LLM, conf=0.73)

      Experimental — accuracy not yet measured
    • cites Petry, 2003a source
    • cites Petry et al., 2006 source
  • Premisecitation

    Individuals who develop problems with different forms of gambling vary in demographic characteristics.

    “Individuals who develop problems with different forms of gambling vary in terms of demographic characteristics (Blaszczynski & Nower, 2002; Ledgerwood & Petry, 2010; Petry, 2003a).”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites Blaszczynski & Nower, 2002 source
    • cites Ledgerwood & Petry, 2010 source

      The Results (page unavailable) report demographic differences among pathological-gambler subtypes: women were overrepresented in the emotionally vulnerable subtype, and the antisocial-impulsive subtype had lower educational attainment. Those subtypes are defined by impulsivity, depression, and anxiety—not by different forms of gambling—so the paper does not establish the claimed difference by gambling form. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites Petry, 2003a source
  • Premisecitation

    Individuals who have wagered via the Internet have substantially higher rates of problem and pathological gambling than those who have not.

    “In epidemiological as well as student surveys, individuals who have wagered via the Internet have substantially higher rates of problem and pathological gambling than their counterparts who have not placed bets using the Internet (Griffiths et al., 2009; Griffiths & Wood, 2007; Griffiths & Barnes, 2008; Ladd & Petry, 2002; Matthews, Farnsworth, & Griffiths, 2009; Petry & Weinstock, 2007; Wood, Gr”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites Griffiths et al., 2009 source

      The Problem gambling section (p. 2) reports a significantly higher prevalence of problem gambling among Internet gamblers than non-Internet gamblers in the British survey. It does not separately report a rate of pathological gambling, so that part of the claim is not established by this paper. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
    • cites Petry & Weinstock, 2007 source
    • cites Wood et al., 2007 source

      The Introduction (p. 1) reports a U.S. survey in which Internet gamblers had significantly higher problem-gambling scores than non-Internet gamblers. The paper’s own online-poker sample included probable pathological gamblers (Problem gambling in online poker players, p. 4), but it had no non-Internet comparison group, so it does not establish a higher rate of pathological gambling among Internet gamblers. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Premisecitation

    Internet gambling is associated with high rates of problem gambling behaviors across populations.

    “Regardless of the population studied, Internet gambling is ubiquitously associated with high rates of problem gambling behaviors.”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites Griffiths et al., 2009 source

      The Problem gambling section (p. 2) reports a 5% problem-gambling prevalence among Internet gamblers and a significantly higher rate than among non-Internet gamblers. The Discussion (p. 3) says smaller UK and US studies reported a similar association. These findings support an association, but not the unqualified claim that it occurs regardless of population studied or is ubiquitous. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites Petry & Weinstock, 2007 source
    • cites Wood et al., 2007 source

      The Results (p. 4) report that 18% of the self-selected student online poker players were classified as probable pathological gamblers, and the Introduction (p. 1) describes a US survey finding higher problem-gambling scores among Internet gamblers. But the Introduction also reports a UK survey with no evidence that Internet gambling was problematic, while an Ontario survey did not examine problem gambling. These passages do not support the claim that high rates occur regardless of population. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Classified as probably not a substantial claim. 38
  • May combine two claims. 11
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In nationally-based epidemiology surveys of adults, Internet gambling participation appears fairly low.

    “In nationally-based epidemiology surveys of adults, Internet gambling participation appears to be fairly low.”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Bakken et al., 2009 source
    • cites González-Ibáñez & Volberg, 2008

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Griffiths et al., 2009 source
      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Only about 1.3% to 8% of Spanish, British and Norwegian adults report having wagered on the Internet.

    “For example, only about 1.3% to 8% of Spanish, British and Norwegian adults report having wagered on the Internet (Bakken, Gotestam, Grawe, Wenzel, & Oren, 2009; González-Ibáñez & Volberg, 2008; Griffiths, Wardle, Orford, Sproston, & Eren, 2009).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Bakken et al., 2009 source
    • cites González-Ibáñez & Volberg, 2008

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Griffiths et al., 2009 source
  • Classified as probably not a substantial claim.

    Study design and conductcitation

    Participants were randomized to one of four conditions after completing baseline evaluation.

    “As described in the primary trial (Petry et al., 2009), participants were randomized to one of four conditions outlined below after completing the baseline evaluation.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Petry et al., 2009 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Studies have shown the overall frequency of gambling to be higher for individuals who wager on the Internet relative to other forms of gambling.

    “Studies have shown the overall frequency of gambling to be higher for individuals who wager on the Internet relative to other forms of gambling (Welte, Barnes, Tidwell, & Hoffmann, 2009).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Welte et al., 2009 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Adolescent and young adult problem gamblers are more likely to drink alcohol, smoke tobacco, and use drugs than their non-problem gambling counterparts.

    “Although rates of substance use did not differ between the two groups of problem gamblers, adolescent and young adult problem gamblers are more likely to drink alcohol, smoke tobacco, and use drugs than their non-problem gambling counterparts (Barnes, Welte, Hoffman, & Tidwell, 2009; Shaffer & Korn, 2002).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Barnes et al., 2009 source
    • cites Shaffer & Korn, 2002 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    In this sample, Cronbach's alpha of the gambling section was 0.71.

    “Cronbach's alpha of the gambling section in this sample was adequate--0.71 (Petry et al., 2009).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Petry et al., 2009 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    There was no significant difference in age between recent Internet gamblers and non-Internet gamblers.

    “Recent Internet gamblers tended to be younger by about a half a year although differences on this variable did not reach significance, and they were significantly more likely to attending college at the campus from which most participants were drawn.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    Recent Internet gamblers were significantly more likely to attend college at the campus from which most participants were drawn.

    “Recent Internet gamblers tended to be younger by about a half a year although differences on this variable did not reach significance, and they were significantly more likely to attending college at the campus from which most participants were drawn.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Up to 23% of college students gamble weekly or more.

    “Up to 23% of college students gamble weekly or more, and between 3% and 14% develop a gambling problem (Engwall, Hunter, & Steinberg, 2004; Petry & Weinstock, 2007; Weinstock, Whelan, Meyers, & Maccausland, 2007).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites Petry & Weinstock, 2007 source
    • cites Weinstock et al., 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Slot machine gamblers may wager to ease psychological distress.

    “Sports and card bettors, for example, report seeking thrills and competition, while slot machine gamblers may wager to ease psychological distress (LaPlante, Nelson, LaBrie, & Shaffer, 2011; Petry, 2003a; Welte, Barnes, Wieczorek, Tidwell, & Hoffman, 2007).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites LaPlante et al., 2011 source
    • cites Petry, 2003a source
    • cites Welte et al., 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Gambling problems are associated with nicotine use.

    “Gambling problems are associated with poor academic performance, heavy alcohol consumption, illicit drug use, nicotine use, and suicide attempts (Engwall et al., 2004; LaBrie, Shaffer, LaPlante, & Wechsler, 2003; Winters et al., 1998).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites LaBrie et al., 2003 source
    • cites Winters et al., 1998

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Pathological gamblers who wager primarily on sports are more likely to have substance use problems.

    “Pathological gamblers who wager primarily on sports are more likely to have substance use problems, while primary slot machine and scratch/lottery ticket gamblers tend to have higher levels of anxiety, psychosis, and suicidality (Petry, 2003a).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Petry, 2003a source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Those with primary problems related to sports, animal, and card betting tend to be male.

    “Those with primary problems related to sports, animal, and card betting tend to be male, while those with primary problems associated with slot machines and bingo tend to be women (Grant & Kim, 2002; Petry, 2003a).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Grant & Kim, 2002 source
    • cites Petry, 2003a source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Individuals with different preferred forms of gambling appear to have different motivations for gambling.

    “Individuals with different preferred forms of gambling also appear to have different motivations for gambling.”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites LaPlante et al., 2011 source
    • cites Petry, 2003a source
    • cites Welte et al., 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Sports and card bettors report seeking thrills and competition.

    “Sports and card bettors, for example, report seeking thrills and competition, while slot machine gamblers may wager to ease psychological distress (LaPlante, Nelson, LaBrie, & Shaffer, 2011; Petry, 2003a; Welte, Barnes, Wieczorek, Tidwell, & Hoffman, 2007).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites LaPlante et al., 2011 source
    • cites Petry, 2003a source
    • cites Welte et al., 2007 source
  • May combine two claims.

    Premisecitation

    In an investigation of Internet gambling among youth, delinquency and substance use are both related to gambling severity in Internet gamblers, while only delinquency contributes to gambling severity in non-Internet gamblers.

    “An investigation of Internet gambling among youth finds that delinquency and substance use are both related to gambling severity in Internet gamblers, while only delinquency contributes to gambling severity in non-Internet gamblers (Brunelle, Leclerc, Cousineau, Dufour, Gendron, Martin, 2012).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Brunelle et al., 2012 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Between 3% and 14% of college students develop a gambling problem.

    “Up to 23% of college students gamble weekly or more, and between 3% and 14% develop a gambling problem (Engwall, Hunter, & Steinberg, 2004; Petry & Weinstock, 2007; Weinstock, Whelan, Meyers, & Maccausland, 2007).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites Petry & Weinstock, 2007 source
    • cites Weinstock et al., 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Gambling problems are associated with suicide attempts.

    “Gambling problems are associated with poor academic performance, heavy alcohol consumption, illicit drug use, nicotine use, and suicide attempts (Engwall et al., 2004; LaBrie, Shaffer, LaPlante, & Wechsler, 2003; Winters et al., 1998).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites LaBrie et al., 2003 source
    • cites Winters et al., 1998

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    23% to 37% of college students report having used the Internet to place a bet.

    “In contrast, 23% to 37% of college students, who are high utilizers of computers and the Internet more generally, report having used the Internet to place a bet (Floros & Siomos, 2012; Petry & Weinstock, 2007).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Floros & Siomos, 2012 source
    • cites Petry & Weinstock, 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Gambling problems are associated with poor academic performance.

    “Gambling problems are associated with poor academic performance, heavy alcohol consumption, illicit drug use, nicotine use, and suicide attempts (Engwall et al., 2004; LaBrie, Shaffer, LaPlante, & Wechsler, 2003; Winters et al., 1998).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites LaBrie et al., 2003 source
    • cites Winters et al., 1998

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Almost two-thirds (61.6%) of regular Internet gamblers were pathological gamblers, compared with 23.9% of infrequent Internet gamblers and 5.0% of non-Internet gamblers.

    “Almost two-thirds (61.6%) of regular Internet gamblers were pathological gamblers, compared with 23.9% of infrequent Internet gamblers and 5.0% of non-Internet gamblers (Petry & Weinstock, 2007).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Petry & Weinstock, 2007 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Gambling problems are associated with illicit drug use.

    “Gambling problems are associated with poor academic performance, heavy alcohol consumption, illicit drug use, nicotine use, and suicide attempts (Engwall et al., 2004; LaBrie, Shaffer, LaPlante, & Wechsler, 2003; Winters et al., 1998).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites LaBrie et al., 2003 source
    • cites Winters et al., 1998

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Those with primary problems associated with slot machines and bingo tend to be women.

    “Those with primary problems related to sports, animal, and card betting tend to be male, while those with primary problems associated with slot machines and bingo tend to be women (Grant & Kim, 2002; Petry, 2003a).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Grant & Kim, 2002 source
    • cites Petry, 2003a source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Gambling problems are associated with heavy alcohol consumption.

    “Gambling problems are associated with poor academic performance, heavy alcohol consumption, illicit drug use, nicotine use, and suicide attempts (Engwall et al., 2004; LaBrie, Shaffer, LaPlante, & Wechsler, 2003; Winters et al., 1998).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Engwall et al., 2004 source
    • cites LaBrie et al., 2003 source
    • cites Winters et al., 1998

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Primary slot machine and scratch/lottery ticket gamblers tend to have higher levels of anxiety, psychosis, and suicidality.

    “Pathological gamblers who wager primarily on sports are more likely to have substance use problems, while primary slot machine and scratch/lottery ticket gamblers tend to have higher levels of anxiety, psychosis, and suicidality (Petry, 2003a).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Petry, 2003a source
  • May combine two claims.

    Study design and conductcitation

    The ASI-gambling score was chosen as primary outcome because it is sensitive to changes in gambling over time and takes into account days and dollars gambled and severity of recent gambling problems.

    “The ASI-gambling score was chosen as the primary outcome because it is sensitive to changes in gambling over time and takes into account days and dollars gambled in the past month, along with severity of recent gambling problems (Petry, 2003a,2007).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Petry, 2003a source
    • cites Petry, 2007

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Internet gamblers tend to engage in all types of gambling frequently, and they have higher average gambling expenditures than non-Internet gamblers.

    “Moreover, similarly to the present study, Internet gamblers tend to engage in all types of gambling frequently, and they have higher average gambling expenditures than non-Internet gamblers (Wood & Williams, 2009).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Wood & Williams, 2009
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    Follow-up rates were 97.4% at week 6 and 96.6% at week 36.

    “Follow-up rates were 97.4% at the week 6 and 96.6% at the week 36 evaluations.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Internet gambling may be particularly troublesome.

    “Previous studies have shown that problem gambling among adolescents and college students is associated with multiple behavioral, psychological, interpersonal, and academic problems (Ellenbogen, Derevensky, & Gupta, 2007; Hardoon, Gupta, & Derevensky, 2004; Messerlian, Byrne, & Derevensky, 2004; Petry & Weinstock, 2007), and that Internet gambling may be particularly troublesome (Brunelle et al., 2”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Brunelle et al., 2012 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    In this sample, Cronbach's alpha for the SOGS was 0.73-0.78 across administrations.

    “In this sample, Cronbach's alpha was 0.73–0.78 across administrations.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductcitation

    The ASI and its gambling section have good internal consistency, test-retest reliability and validity.

    “The ASI (McLellan, Luborsky, Cacciola, Griffith, McGahan, & O'Brien, 1988) and its gambling section (Lesiuer & Blume, 1991; Petry, 2003b; Petry, 2007), has good internal consistency, test-retest reliability and validity.”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites McLellan et al., 1988

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Lesiuer & Blume, 1991

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Petry, 2003b source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationown data

    Internet gambling may also be normative and encouraged in certain social groups, as one campus had substantially higher rates of Internet gambling than the other campuses.

    “Internet gambling may also be normative and encouraged in certain social groups, as one campus had substantially higher rates of Internet gambling than the other campuses.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    Participants were randomly assigned to different interventions.

    “Participants were randomly assigned to different interventions, and rates of follow-up completion were excellent.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    The assessment battery was intentionally short, so extensive details of psychosocial problems were not collected.

    “First, this was a brief intervention study, and as such the assessment battery was intentionally short so extensive details of psychosocial problems were not collected.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    In this sample, Cronbach's alpha for the NODS was 0.83.

    “Cronbach's alpha in this sample was 0.83.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    The lack of differences between groups in outcomes may also reflect that college students do not differ markedly in their gambling patterns over time regardless of whether or not they wager on the Internet.

    “The lack of differences between groups in terms of outcomes may also reflect that college students do not differ markedly in terms of their gambling patterns over time regardless of whether or not they wager on the Internet.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Study design and conductcitation

    The SOGS is reliable and valid in assessing gambling problems.

    “The SOGS is reliable and valid in assessing gambling problems (Stinchfield, 2002; Weinstock et al., 2007; Wulfert et al., 2005), with scores ≥3 commonly used to indicate problem gambling (Petry, 2005).”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites Stinchfield, 2002 source
    • cites Weinstock et al., 2007 source
    • cites Wulfert et al., 2005 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductcitation

    The NODS has test-retest reliability of 0.99 and classifies 95% of treatment-seeking gamblers as pathological.

    “Test-retest reliability is 0.99, and the NODS classifies 95% of treatment-seeking gamblers as pathological (Gerstein et al., 1999).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Gerstein et al., 1999

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning

    Younger students may have greater difficulty accessing casinos due to the minimum age of 21 years in local casinos, and therefore younger students may have been more likely to wager online.

    “Younger students may have greater difficulty accessing casinos due to the minimum age of 21 years in local casinos, and therefore younger students may have been more likely to wager online.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    These data were collected from a relatively large sample of college student problem gamblers from several campuses.

    “Despite these limitations, these data were collected from a relatively large sample of college student problem gamblers from several campuses.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Previous studies have shown that problem gambling among adolescents and college students is associated with multiple behavioral, psychological, interpersonal, and academic problems.

    “Previous studies have shown that problem gambling among adolescents and college students is associated with multiple behavioral, psychological, interpersonal, and academic problems (Ellenbogen, Derevensky, & Gupta, 2007; Hardoon, Gupta, & Derevensky, 2004; Messerlian, Byrne, & Derevensky, 2004; Petry & Weinstock, 2007), and that Internet gambling may be particularly troublesome (Brunelle et al., 2”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Ellenbogen et al., 2007 source
    • cites Hardoon et al., 2004 source
    • cites Messerlian et al., 2004
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Rates of follow-up completion were excellent.

    “Participants were randomly assigned to different interventions, and rates of follow-up completion were excellent.”
    Quote in the paperNot a substantial claim
42 of 42
  • The paper relies on this without support.

    Little research has addressed whether Internet problem gamblers have distinguishing features from other problem gamblers.

    “Little research has addressed whether Internet problem gamblers, however, have distinguishing features from their counterparts who gamble problematically on other forms of gambling.”
  • The paper relies on this without support.

    This is the first study providing a comprehensive assessment of Internet gambling in college students.

    “This is the first study providing a comprehensive assessment of Internet gambling in college students, a population with high rates of experience with Internet gambling.”
2 of 2

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • ConsistentF(2, 216) = 25.72reported p < .001 · recomputed p < .001

    “F (2,216) = 25.72, p < .001”

  • ConsistentF(1, 108) = 8.8reported p < .004 · recomputed p = .004

    “F (1,108) = 8.80, p < .004”

  • ConsistentF(2, 216) = 3.45reported p = .03 · recomputed p = .034

    “F (2,216) = 3.45, p = .03”

  • ConsistentF(2, 216) = 0.73reported p = .48 · recomputed p = .483

    “F (2,216) = 0.73, p = .48”

4 of 4

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Reported Mann-Whitney U is below the minimum implied by the group counts

    Minor

    Of the 57 recent Internet gamblers, 13 did not gamble online weekly over their lifetimes, while 7 non-recent Internet gamblers did. Those 7 must rank above those 13, accounting for at least 91 pairwise comparisons. The reported U of 55.84 is therefore too small for either orientation of this comparison.

1 of 1

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. American Psychiatric Association. (1994). Diagnostic and sadistical manual of mental disorders (4th ed.). Washington, DC: American Psychiatric Association Press.
  2. Gerstein, D. R., Volberg, R. A., Toce, M. T., Harwood, H., Johnson, R. A., Buie, T., et al. (1999). Gambling impact and behavior study: Report to the national gambling impact study commission. Chicago, IL: National Opinion Research Center at the University of Chicago.

Cited by

Sorted by citations

Authors
Petry, N. M., & Gonzalez-Ibanez, A.
Affiliations
University of Connecticut (US)
Corresponding author
Petry, Nancy M.
Venue
Journal of Gambling Studies
Published
2013-12-12
Volume
31
Issue
2
Pages
397-408
ISSN
  • 1050-5350 (ISSN-L)
  • 1573-3602
OpenAlex
W2079703163
Cited by
34
References
52
Citations by year
2026: 1 · 2025: 4 · 2024: 1 · 2023: 6 · 2022: 3 · 2021: 8 · 2020: 3 · 2019: 1 · 2018: 2 · 2017: 1 · 2016: 3 · 2015: 1
FWCI
1.48
Type
journal article
Language
en
Open access
Locations
  • Journal of Gambling Studies (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Alcohol Abuse and Alcoholism (P60AA003510)
  • National Institute of Mental Health (R01MH060417)
  • National Institute on Drug Abuse (R01DA021567, P50DA009241)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Gambling Behavior and Treatments
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Social Sciences › Sociology and Political Science › Impact of Technology on Adolescents
Keywords
online gambling, problem gambling, university students, brief intervention, motivational enhancement therapy, cognitive behavioral therapy, school absenteeism, family problems, anxiety, gambling cessation
MeSH terms
Female, Gambling, Humans, Male, Patient Acceptance of Health Care, Students, Cognitive Behavioral Therapy, Behavior, Addictive, Treatment Outcome, Internet, Young Adult

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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read under definition version 3 (extract-v3) on 2026-09-28.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-09-28.

Cited sources are checked by gpt-6-sol.

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