Testing the ruler with item response theory: Increasing precision of measurement for relationship satisfaction with the Couples Satisfaction Index.

“Relationship satisfaction was measured using the Couple Satisfaction Index − Short Form (CSI-4).(63) The CSI-4 contains 4 items that ask about happiness, degree of comfort, rewards, and satisfaction with one’s relationship.”

“…other relationship constructs in the literature which tend to focus on the individual’s own relationship experience (e.g., “My relationship with my partner makes me happy”; Funk & Rogge, 2007), or perception of one’s partner’s behaviors (“My partner made me feel cared for”; Maisel & Gable, 2009).”

“The CSI-4 shows high internal consistency and convergent validity with other well-validated measures of relationship satisfaction, and with the 32-item version of the same scale (Funk & Rogge, 2007).”

“Understanding the couple dyad involves examining positive characteristics, such as satisfaction with one’s partner or relationship (Funk & Rogge, 2007), but should also allow for the presence of dysfunctional elements such as couple conflict.”

“2 (10-item, Physical Health subscale a = 0.81; Mental Health subscale a = 0.86), 25 the four-item Couple’s satisfaction index ( a = 0.94), 26 and a modified one-item Control Preferences Scale question.”

“Regarding psychometrics, the 16-item CSI demonstrates convergent validity with existing measures of marital satisfaction (Funk & Rogge, 2007).”

“Four items from an Item Response Theory analysis of the Couple Satisfaction Index (Funk & Rogge, 2007) were used to measure relationship satisfaction, including satisfaction (from 1 D worse than all others/extremely bad to 6 D better than all others/extremely good), reward (from 1 D not at all to 6…”

“The 16-item version of the Couples Satisfaction Index (CSI; Funk & Rogge, 2007) was used to assess relationship satisfaction.”

“Although social support and relationship satisfaction are correlated and some older measures of relationship satisfaction have included items about social support (Fincham & Bradbury, 1987), more recent research shows that they are related, but distinct, constructs (e.g., Funk & Rogge, 2007).”

“We assessed men and women’s relationship satisfaction with a 4-item Couples Satisfaction Index (Funk & Rogge, 2007), a scale designed to measure one’s satisfaction in a relationship, during each assessment phase.”

“…highly satisfied couples show little benefit from Couple CARE in Uniform in the short term, or that any changes were not detected; existing measures of relationship satisfaction have low sensitivity for discriminating between couples at the high end of the satisfaction range (Funk & Rogge, 2007).”

“Relationship satisfaction was measured using the four-question version of the Couples Satisfaction Index (CSI; Funk & Rogge, 2007).”

“Participants also completed the Marital Adjustment Test (MAT) (Locke & Wallace, 1959), a widely-used measure (e.g., Funk & Rogge, 2007).”

“The scale has been used and validated in many studies (Funk & Rogge, 2007; Heyman, Sayers, & Bellack, 1994; Ledermann & Macho, 2009).”

“The 4-item version of the Couples Satisfaction Index (CSI-4; Funk & Rogge, 2007) was used to assess relationship satisfaction.”

“…cinco continentes, em países como China (Shek & Cheung, 2008), África do Sul (Lesch & Engelbrecht, 2008), França (Antoine, Christophe & Nandrino, 2008), Alemanha (Dinkel & Balck, 2006), Austrália (Hundertmark, Esterman, Ben-Tovim, Austin, & Dougherty, 2007) e Estados Unidos (Funk & Rogge, 2007).”

“…Model Scale (IMS; Rusbult et al., 1998; αs > .88) in one study, three items from the Perceived Relationship Quality Components Inventory (PRQC; Fletcher et al., 2000; αs > .84) in two studies, and the four-item Couple Satisfaction Index (CSI; Funk & Rogge, 2007; αs > .94) in three studies.”

“Relationship satisfaction was assessed using the Couples Satisfaction Index (CSI-16; Funk & Rogge, 2007), a 16-item measure that assesses satisfaction within a relationship.”

“Romantic relationship satisfaction was assessed through the Couples Satisfaction Index – 4 (CSI-4; Funk & Rogge, 2007), which previous research reports have adequate convergent validity with other romantic relationship satisfaction assessments (Funk & Rogge, 2007).”

“This construct was measured using four items from the Funk and Rogge (2007) relationship scale.”

“Couple satisfaction will be assessed using the Couple Satisfaction Index (4 items) [59].”

“The four-item version of the Couples Satisfaction Index (Funk & Rogge, 2007) was included to assess individuals’ satisfaction with their current primary romantic relationships.”

“Participants completed the 4-item Couples Satisfaction Index (CSI; Funk & Rogge, 2007) at Wave 1.”

“Part B (Marital Satisfaction) consisted of the 32-item long-form Couples Satisfaction Index (CSI; Funk and Rogge 2007).”

“Couples Satisfaction Index (Funk and Rogge 2007) This instrument is composed of 32 items designed to measure satisfaction in a romantic relationship.”

“Positing that positive qualities of a relationship are unique from its negative qualities, the authors developed the Positive–Negative Relationship Quality scale (PN-RQ) via modern test theory procedures (i.e., item response theory) and demonstrated that it produced unique predictive validity over other unidimensional…”

“MS was measured using the 4-item Couple Satisfaction Index (CSI-4; Funk & Rogge, 2007).”

“The 16-item Couples Satisfaction Index is an abridged version of the larger 32-item version.”

“The Couples Satisfaction Index (CSI) was used to assess women’s marital satisfaction (Funk & Rogge, 2007).”

“Participants were stratified into high versus low level of self-reported relationship satisfaction subgroups (based on a CSI cut-off value of 51.5; Funk & Rogge, 2007), and high versus low subgroups according to the veteran’s current level of PTSD symptoms (based on the accepted PCL cut-off score of 50; Buckman et al.…”

“Reliability of the CSI within this sample was high at a ¼ .81.”

“Using the CSI-16 cut-off score of 51.5 (Funk & Rogge, 2007), 21.7% of participants in the self-directed book condition could be categorized as “distressed” at pre-intervention assessment compared to 46.2% of participants in the multi-couple group format.”

“We assessed coupled participants ’ satisfaction with their romantic relationship using the Couples Satisfaction Index (CSI; Funk & Rogge, 2007).”

“We assessed relationship satisfaction during the past 4 weeks using the 4-item Couples Satisfaction Index (CSI-4; Funk & Rogge, 2007).”

“In the second study phase, we selected one to two items per indicator – quality of relationship: last two items of CSI-4; quality of life: single question about global, subjective quality of life from the MQoL-r and QOLLTI-F V2; psychological distress: two items of the Integrated Palliative Care Outcome Scale (IPOS) F…”

“For example, to consolidate measures on aggression (Webster et al., 2014) or couples’ satisfaction (Funk & Rogge, 2007), scholars used iterative scale development methods (i.e., factor analyses or item response theory).”

“The Couple (Marital) Satisfaction Index is a 32-item scale that assesses a person’s satisfaction in the relationship with their partner [82], which is further referred to as their marital satisfaction.”

“For the remainder of the participants, the pre-pandemic CSI-4 was unavailable (i.e., it was not collected in the original study) and, therefore, could not be used as the baseline pre-pandemic relationship satisfaction covariate.”

“Testing the ruler with item response theory: Increasing precision of measurement for relationship satisfaction with the Couples Satisfaction Index.”

“We used the 16-item version of the Couples Satisfaction Inventory, developed and validated by Funk and Rogge (2007).”

“Couples Satisfaction Index (Funk & Rogge, 2007): The couples satisfaction index was developed using item response theory to provide a more fine tailored measurement of relationship satisfaction.”

“Couple Satisfaction Index (CSI-32) (Funk & Rogge, 2007).”

“The first was the 4-item Couples Satisfaction Index (Funk & Rogge, 2007) that measures how much one feels happy and satisfied about their relationship and describes it as warm and rewarding using a 7-point scale to anchor answers (higher scores reflect higher relationship satisfaction).”

“Relationship satisfaction was assessed with the two-part, 16-item Couple Satisfaction Index (CSI-16; Funk & Rogge, 2007).”

“Relationship satisfaction was measured with three items adapted from the Couple Satisfaction Index (CSI; Funk & Rogge, 2007) for daily surveys (e.g., “On a scale from 0 ‘not at all’ to 5 ‘completely’, How rewarding would you say your relationship with your partner was today?””

“Modern questionnaire development often uses Item Response Theory Analyses to develop maximally efficient scales (e.g., Funk & Rogge, 2007); for screener development, a conceptually parallel approach would take a set of content valid items and, through a forward stepwise approach, add items until a…”

“The Couples Satisfaction Index (CSI; Funk & Rogge, 2007) is a self-report questionnaire that assesses relationship satisfaction and has a 4, 16, and 32 item version of the scale; the present study used the 16-item version.”

“This measure boasts good psychometric properties, with the validation study showing a standardized Cronbach’s alpha of .98 (Funk & Rogge, 2007), and with Cronbach’s alphas of .97 for both women and partners in the present study.”

“T hi s ar tic le is in te nd ed so le ly fo r th e pe rs on al us e of th e in di vi du al us er an d is no t to be di ss em in at ed br oa dl y. Funk & Rogge, 2007).”

“Mean age was 26.2 years (SD = 4.2) for men and 24.7 years (SD = 3.5) for women, and mean relationship satisfaction was 67.3 (SD = 10.6) for men and 64.2 (SD = 17.5) for women on the CSI-16 (Funk & Rogge, 2007), above the clinical distress cutoff of 51.5.”

“The distress cut point for this instrument was a score of 13.5; scores less than this cut point can be used to identify couples at risk for dissolution of the relationship (Funk & Rogge, 2007).”

“The Assessment of Quality of Life-8 Dimensions (AQol-8D) [56] will be used to assess quality of life, and relationship satisfaction will be measured by the Couples Satisfaction Index [57].”

“A score of 21.5 or below is considered a positive screen for clinically significant relationship strain (Funk & Rogge, 2007; present sample Time 1 .88; Time 2 .90).”

“…were above the midpoint of the scales), were satisfied in their relationships (i.e., spouses who score above 24.5 are considered maritally satisfied; Funk & Rogge, 2007), and had few symptoms of depression (i.e., participants who obtain score of 29 or above fall in the severely depressed range and…”

“Participants completed the 16-item version of the Couples Satisfaction Index (Funk & Rogge, 2007).”

“Suitable methods for assessing unidimensionality include conducting an exploratory factor analysis (e.g., Funk & Rogge, 2007) and inspecting factors’ eigenvalues, the ratio of the eigenvalue of the first factor to the second and subsequent factors, and the “knee” in scree slopes (Ruscio & Roche,…”

“The CSI shows strong correlations with the Dyadic Adjustment Scale and the Marital Adjustment Test indicating good convergent validity.”

“We used a 16-item version of the Couples Satisfaction Index (Funk & Rogge, 2007).”

“Satisfaction The 16-item Couples Satisfaction Index (CSI-16; Funk & Rogge, 2007) provided global evaluations of participants’ romantic relationship.”

“For details outlining the collection of additional COVID-19–focused surveys through supplemental funding from the National Center for Complementary and Integrative Health, see the Multimedia Appendix 2 [1,31,38,44,45,48,”

“At Time 1, 2, and 3, the Couple Satisfaction Index (CSI; Funk & Rogge, 2007) was used to assess one’s subjective global evaluation of one’s relationship.”

“As no validated scale exists to measure rider satisfaction, items were modeled on previous studies (Górecka-Bruzda et al., 2015; Górecka-Bruzda et al., 2016) and the Couples Satisfaction Index (Funk & Rogge, 2007).”

“Relationship satisfaction was measured using the Couple Satisfaction Index-Short form (CSI-SF; Funk & Rogge, 2007).”

“Couple Satisfaction Relationship satisfaction was measured using the four-item version of the Couples Satisfaction Index (CSI; Funk & Rogge, 2007).”