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

“The scale has demonstrated evidence of internal consistency (Cronbach’s alpha .98) and was related to the Dyadic Adjustment Scale (Funk & Rogge, 2007).”

“The Couples Satisfaction Index (CSI; Funk & Rogge, 2007) is a 32-item measure of relationship satisfaction that can be used for a variety of romantic relationships (M = 120.76, SD = 21.73, α = .92).”

“However, the scale’sability to differentiate between distressed andnondistressed couples has been shown to be superior to other similar scales (Funk & Rogge, 2007), leading to widespread adoption of the CSI (e.g., at the time of this writing, it has been cited over 160 times in the PsycINFO…”

“Compared to some other relationship satisfaction scales, it has greater power for detecting differences in levels of satisfaction; it has also demonstrated strong convergent validity with other measures of satisfaction and has excellent construct validity (Funk & Rogge, 2007).”

“Quality of the Couple Relationship is measured with the Couple Satisfaction Index [35] during pregnancy at nine months, at 18 months and at six years, and the Coparenting Relationship Scale [36] at nine months and 18 month, and divorce rate at seven years.”

“…all SEM models substituting as dependent variables men’s and women’s residualized sexual satisfaction scores from which variance shared with relationship satisfaction had been removed (relationship satisfaction was assessed with the 16-item Couples Satisfaction Index [Funk & Rogge, 2007], α = .97).”

“…the Relationship Conflict Questionnaire, which comprised four instruments: the Conflict Communication Inventory (Sanford, 2010a), the Negative Attributions Scale (Sanford, 2010b), the Couples’ Underlying Concerns Inventory (Sanford, 2010b), and the Couples Satisfaction Index (Funk & Rogge, 2007).”

“Participants provided reports of the satisfaction they feel in their current relationship using the Couples Satisfaction Index (CSI; Funk & Rogge, 2007), which was developed using itemresponse theory.”

“R a t i n g I n v e n t o r y f o r P T S D ( S R I P ) [ 54 ] , • T h e C o u p l e S a t i s f a c t i o n I n d e x [ 55 ] , • T h e S o c i a l S u pp o r t Q u e s t i o nn a i r e [ 56 ] N o r i s k f a c t o r s i d e n t i f i e d [ 34 ] I n t h i s s t u d y w h i c h w a s c o n du c t e…”

“Funk and Rogge (2007) provided convincing evidence that their Couple’s Satisfaction Index (CSI) provides a greater depth of information about the relationship satisfaction construct than other comparable and popular measurement instruments (like the Dyad Adjustment Scale; Spanier, 1976) and the…”

“The Couple Satisfaction Inventory–32 by Funk and Rogge [75] is a global self-report measurement of satisfaction in a relationship.”

“The scores are calculated by tallying up the total points of the items, which can range between 0 and 81 (Funk and Rogge, 2007).”

“We used the 4-item Couple Satisfaction Index (CSI; Funk and Rogge 2007) to assess husbands’ and wives’ marital satisfaction at T1 and T3.”

“Couple functioning Participants reported on their current relationship satisfaction using the 8- item version of the Couple Satisfaction Index (CSI; Funk & Rogge, 2007).”

“The relationship satisfaction construct was measured using 4 items from the Funk and Rogge (2007) Couple Satisfaction Index.”

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

“First, to assess interparental relationship quality, couples completed the Couple Satisfaction Index (CSI; Funk & Rogge, 2007).”

“The relationship satisfaction construct was measured using the 4-item version of the Couple Satisfaction Index (Funk & Rogge, 2007) that was collected at Times 1 and 2.”

“To assess couple satisfaction, both mothers and fathers completed the 16-item Couple Satisfaction Index (CSI-16), a well-validated measure assessing feelings and evaluations toward a romantic partner (Funk & Rogge, 2007).”

“The CSI ‐ 32 is a self ‐ report measure that was developed to specifically assesses relationship satisfaction independent of other facets of relationship quality among couples (Funk & Rogge, 2007).”

“The 7 items of the abbreviated scale can discriminate between people who are high and people who are low on dyadic adjustment (Sharpley & Cross, 1982) and the abbreviated scale correlates strongly with other relationship adjustment and satisfaction scales (Funk & Rogge, 2007).”

“In this study, CSI developed by Funk and Rogge (2007) was used to measure relationship satisfaction.”

“E-mail: camilla.matera@unifi.it 322 evaluation of a romantic relationship (Funk & Rogge, 2007).”

“The CSI correlates in expected directions with standard relationship measures such as the Dyadic Adjustment Test and Marital Adjustment Test and demonstrates excellent psychometric properties (e.g., Cronbach α = .98; Funk & Rogge, 2007).”

“The CSI-16, which has demonstrated good reliability and validity with college age dating relationships, provides more precision and power than traditional measures of relationship satisfaction (Funk & Rogge, 2007).”

“Other studies, however, used a variety of other measures, including: the 4-item Couples Satisfaction Index, 83 the 6-item Quality of Marriage Index (QMI), 84 and the 3-item Kansas Marital Satisfaction Scale (KMSS).”

“Analyses controlled for age and relationship satisfaction (Couples Satisfaction Inventory-32; Funk & Rogge, 2007; α = .98), given their association with study variables.”

“PANDAS, pediatric autoimmune neuropsychiatric disorder associated with streptococcal infections; PANS, pediatric acute-onset neuropsychiatric syndrome. relationship (Funk and Rogge, 2007).”

“Marital satisfaction was measured using the Couple Satisfaction Index (CSI-4; Funk & Rogge, 2007), which is an abbreviated version of the CSI-32.”

“Each spouse self-reported on relationship satisfaction using three items from the CSI-SF scale (Funk & Rogge, 2007).”

“The 4-item Couples Satisfaction Index (CSI-4) assessed relationship satisfaction (Funk and Rogge, 2007).”

“Based on the Couples Satisfaction Index (Funk & Rogge, 2007), 41% of mothers and 35% of fathers scored less than 104.5, placing them in the couple relationship distressed range.”

“The Couples Satisfaction Index-4 (Funk & Rogge, 2007) is a four-item, Likert-type scale that assesses relationship satisfaction with one’s partner.”

“On a 6-point Likert scale (0 = not at all, 5 = completely), the four-item version of the Couples Satisfaction Index (CSI; Funk & Rogge, 2007) was used to assess relationship satisfaction (e.g., “How rewarding is your relationship with your partner?”).”

“Participants completed the Couples Satisfaction Index [33], a 32-item measure of an individual’s satisfaction in their romantic relationship that was developed using item response theory with a pool of items from several relationship satisfaction measures.”

“The 16-item version of the Couples Satisfaction Index (CSI16; Funk & Rogge, 2007) was used to assess relationship satisfaction.”

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

“This short version of the original scale was developed through item- response theory to provide a valid and concise measure of relationship satisfaction (Funk & Rogge, 2007).”

“A DAS score below 98 was used to indicate clinically significant distress (Christensen et al., 2004; Funk & Rogge, 2007; Jacobson et al., 1984).”

“The measure has good convergent and construct validity with other relationship satisfaction measures as well as strong internal consistency (Funk & Rogge, 2007).”

“Several modern and well-validated scales exist for the concepts assessed in this study, including the Couple Satisfaction Index (Funk & Rogge, 2007) and the New Sexual Satisfaction Scale (Stulhofer et al., 2010).”

“There are several instruments that are used to measure marital satisfaction, such as the Marital Adjustment Test (MAT) (Locke and Wallace 1959), the Dyadic Adjustment Scale (DAS) (Spanier 1976), the Couple Satisfaction Index (CSI) (Funk and Rogge 2007), and the ENRICH (Enriching and Nurturing Relationship Issues, Comm…”

“Starting with 180 items previously used to assess relationship satisfaction, Funk and Rogge (2007) conducted an IRT analysis to develop a four-item measure of relationship satisfaction with optimized psychometric properties.”

“Funk and Rogge (2007) reported that well-used measures of satisfaction such as the Dyadic Adjustment Scale (DAS, Spanier, 1976) and the Marital Adjustment Test (Locke & Wallace, 1959), actually introduce significant amounts of error variance to the assessment of relationship satisfaction.”

“The 4- item Couple Satisfaction Inventory (Funk & Rogge, 2007), measured relationship satisfaction.”

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

“Previous studies have reported strong internal consistency, above a¼ .90 (Fincham et al., 2008; Funk & Rogge, 2007).”

“Most participants (87%) endorsed initial relationship satisfaction scores in the distressed range (< 13.5; Funk and Rogge 2007).”

“Six months post-partum, the participants completed an additional online follow-up questionnaire, which again included the CSI.”

“Each partner’s relationship satisfaction was assessed with the four-item Couples Satisfaction Index (Funk & Rogge, 2007), which provides global evaluations of romantic relationships (e.g., “I have a warm and comfortable relationship with my partner,” “How rewarding is your relationship with your…”

“Relationship satisfaction, our outcome variable, was assessed using the Couples Satisfaction Index–4 (CSI-4; Funk & Rogge, 2007), a four-item measure assessing overall relationship satisfaction.”

“Relationship satisfaction was measured using the Couples Satisfaction Index (CSI; Funk & Rogge, 2007) in the 32-item version at intake (CSI-32) and the four-item version (CSI-4) at the first treatment session.”

“Compared to the Dyadic Adjustment Scale (DAS; Spanier, 1976), the QMI is an equal or superior measure of relationship satisfaction for couples who are relationally dissatisfied (Funk & Rogge, 2007).”

“The four-item scale of the Couple Satisfaction Index (CSI) (Funk & Rogge, 2007) was used to assess participants’ relationship satisfaction.”

“The measure demonstrates excellent internal consistency (a D .98 in the development sample) and convergent validity (correlations with other measures of relationship satisfaction ranging from .85 < rs < .98 in the development sample; Funk & Rogge, 2007).”

“The QMI was rescaled and summed to have a range of 0–39, with a cutoff score of 24.5 separating distressed from nondistressed couples and lower scores reflecting lower relationship satisfaction (Funk & Rogge, 2007).”

“…core constructs central to measuring marital satisfaction in systematic reviews of the literature (Marshal, 2003), and are identified among the items on the Dyadic Adjustment Scale which provide the most information on marital satisfaction using Item Response Theory analyses (Funk & Rogge, 2007).”

“Of these items, five are on the full-scale of the Couples Satisfaction Index, which was derived by using item response theory to determine the most valid items for relationship quality from all known relationship quality measures (Funk & Rogge, 2007).”

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

“We again used the Funk and Rogge (2007) four-item measure of relationship satisfaction (α = .”

“The Couple Satisfaction Index [CSI (58)] assessed parent-couple relationship satisfaction.”

“Couple satisfaction was assessed using the Couple Satisfaction Index-16 (CSI-16; Funk & Rogge, 2007) at intake and prior to every fourth session thereafter.”

“We constructed this measure based on the Couples Satisfaction Index (Funk & Rogge, 2007).”

“Factor analysis is used with the categorical questions in following previous research (Bartels and Johnston 2012a) and IRT is used when there are binary measures because of current best practices (Funk and Rogge 2007).”

“self-report questionnaire that has high measurement accuracy and high convergence validity with other relationship satisfaction scales (43).”