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Cognitive-Behavioral Therapy (CBT) assessment is a structured diagnostic and formulation process that identifies the relationships between situations, thoughts, feelings, and behaviors maintaining psychological distress. Rooted in the cognitive model developed by Aaron T. Beck in the 1960s, CBT assessment produces a pe
The Collaborative Study Psychotherapy Rating Scale (CSPRS) is an observer-rated measure of therapist adherence to a psychotherapy protocol and general competence in delivering the intervention. Developed for the NIMH Treatment of Depression Collaborative Research Program, the CSPRS uses audiotape or videotape review to
The Collectivism-Individualism Scale is a self-report measure designed to assess individual differences in independent versus interdependent self-construal and cultural orientation toward individualism and collectivism. Developed by Singelis (1994) and refined through subsequent research by Triandis and colleagues, the
The Columbia-Suicide Severity Rating Scale is a brief clinician-administered assessment of suicide risk developed by Kelly Posner and colleagues at Columbia University to address limitations in prior screening tools. First published in the American Journal of Psychiatry in 2011, the C-SSRS has become the FDA-endorsed s
The CES is a 7-item self-report measure of combat exposure developed by Keane and colleagues in 1989. It quantifies the frequency and intensity of combat experiences, including direct fire, causalities witnessed, and hazardous mission environments. It is widely used in veteran research and clinical screening to charact
Construct validity in computerized adaptive testing evaluates whether the latent trait estimates produced by a CAT instrument genuinely measure the intended psychological or educational construct. Because adaptive algorithms select items individually for each examinee, the validity evidence gathered must account for th
Content validity in computerized adaptive testing (CAT) ensures that an adaptively administered assessment adequately samples the intended content domain despite delivering only a subset of items to each examinee. It integrates classical content validity methods with CAT-specific item bank design and content balancing
Convergent validity assessment for computerized adaptive tests (CATs) examines whether the ability or trait estimates produced by an adaptive algorithm correlate substantially with scores from other measures of the same construct. Because each examinee receives a different subset of items in a CAT, demonstrating that t
Discriminant validity in computerized adaptive testing (CAT) is the evaluation process confirming that a CAT-administered scale measures its intended construct distinctly from related but conceptually different constructs. Despite the adaptive item-selection mechanism varying each respondent's item set, evidence must b
Computerized adaptive testing based on item response theory is a sequential measurement procedure in which a computer algorithm selects successive test items tailored to each examinee's estimated ability level. Drawing on IRT to model item characteristics and ability estimation, CAT delivers precise scores with far few
Computerized adaptive test measurement invariance evaluates whether a CAT instrument measures the same latent construct with the same psychometric properties across different groups (e.g., gender, language, clinical vs. community) or time points. It combines IRT-based adaptive test frameworks with measurement equivalen
Computerized adaptive testing with the Rasch model selects items in real time based on each examinee's evolving ability estimate, so that every person receives a test precisely calibrated to their proficiency level. The result is a shorter, more efficient measurement instrument that loses none of the precision of a ful
CAT reliability analysis quantifies measurement precision in computerized adaptive tests where each examinee receives a unique, individually tailored subset of items. Rather than a single classical coefficient, it uses item response theory to express precision as conditional standard error of measurement at each abilit
The Conflict Tactics Scale is the most widely used instrument for measuring how intimate partners handle disagreements and conflict, including tactics ranging from negotiation and psychological aggression to physical violence and sexual coercion. Developed by Murray Straus in 1979 and substantially revised in 1996 (CTS
The Conspiracy Mentality Questionnaire measures individual differences in generic conspiracy thinking—the tendency to attribute significant events to hidden, coordinated group actions by powerful actors rather than to incompetence, chance, or transparent public causes. Developed by Bruder et al. (2013), the five-item C
Construct validity is the degree to which a test or scale actually measures the theoretical construct it is intended to measure. Introduced by Cronbach and Meehl in 1955, it is the central validity concern in psychological and educational measurement, evaluated by accumulating multiple lines of empirical and logical ev
Content validity is evidence that a measurement instrument adequately samples the full domain of the construct it is intended to measure. It is established through systematic expert review and quantified with indices such as Lawshe's Content Validity Ratio (CVR) and Lynn's Content Validity Index (CVI), making it the fo
The Content Validity Ratio (CVR) is a quantitative method developed by Charles Lawshe in 1975 for evaluating the extent to which items in a measurement instrument are relevant and representative of a target construct. The method aggregates expert panel judgments into a single validity coefficient for each item, enablin
Convergent validity is the degree to which multiple indicators that are theoretically expected to measure the same construct actually correlate with one another. It is one of the two complementary forms of construct validity identified by Campbell and Fiske (1959) and is now routinely assessed via factor loadings and t
The Corah Dental Anxiety Scale (DAS), also known as the Dental Anxiety Scale, is a brief 4-item self-report questionnaire designed to measure anxiety associated with dental treatment. Developed by Norman L. Corah in 1969, the DAS is the most widely used instrument for assessing dental anxiety in clinical practice and r
The Course Experience Questionnaire (CEQ) is an institutional assessment tool measuring students' perceptions of their learning environment and educational experience in a course. Developed by Wilson, Lizzio, and Ramsden (1997), it assesses dimensions including good teaching, clear goals, appropriate workload, appropri
The Crowne-Marlowe Social Desirability Scale (CMSD) is a 33-item self-report measure designed to assess the tendency to present oneself favorably in social contexts, independent of psychopathology. Developed by Douglas Crowne and David Marlowe in 1960, the CMSD measures impression management and social desirability bia
The Cultural Intelligence Scale (CQS) is a 20-item measure assessing an individual's capability to function effectively in culturally diverse contexts and to adapt behavior appropriately across cultural settings. Developed by Christopher Earley and Soon Ang in the early 2000s, the CQS operationalizes cultural intellige
The Cultural Values Scale is a self-report measure designed to assess individual endorsement of cultural values spanning individualism and collectivism. Developed within the cross-cultural psychology literature, the scale captures how individuals prioritize personal autonomy, achievement, and self-expression against gr
The Dark Triad Personality Scale measures three socially aversive personality traits: narcissism (entitlement and exploitativeness), Machiavellianism (manipulativeness and strategic lying), and psychopathy (callousness and thrill-seeking). Developed by Delroy Paulhus and Kevin Williams in 2002, and later operationalize
The De Jong Gierveld Loneliness Scale is one of the most extensively used brief instruments for measuring loneliness in population surveys, clinical research, and gerontological studies. Developed by Jenny De Jong Gierveld and Fons Kamphuis in 1985, the 11-item scale (with a shorter 6-item version available) measures e
The Depression Anxiety Stress Scales-21 (DASS-21) is a 21-item self-report instrument measuring three correlated but distinct dimensions of psychological distress: depression, anxiety, and stress. Developed by Lovibond and Lovibond in 1995, the DASS-21 is a short form of the original 42-item DASS. It has become widely
The Disenfranchised Grief Scale (DGS), developed from Kenneth J. Doka's conceptual framework, assesses grief that society does not recognize, validate, or support—grief that is excluded from public mourning rituals, openly acknowledged grief ceremonies, or institutional support. Examples include loss of a former spouse
Dialectical Behavior Therapy (DBT) is a comprehensive, multimodal psychosocial intervention developed by Marsha M. Linehan to treat individuals with Borderline Personality Disorder (BPD) and chronic suicidality. Combining cognitive-behavioral principles with dialectical philosophy and Zen principles, DBT is delivered t
The Dichotic Listening Task is an auditory measure of selective attention and hemispheric lateralization. Different speech stimuli (words, digits, or syllables) are presented simultaneously to each ear via headphones. Participants attend to one ear (shadowing or repeating that information) while ignoring the other. Acc
The Dictator Game is a simple economic decision task measuring generosity and prosocial behavior. One player (dictator) receives money and unilaterally decides how to allocate it between themselves and an anonymous second player (recipient). The recipient cannot reject the offer; they simply receive what the dictator g
Differential item functioning identifies test or survey items that behave differently for examinees from different groups — such as gender, ethnicity, or language background — after controlling for the underlying ability or trait being measured. DIF analysis is essential for fairness evaluation in educational testing a
The DERS is a 36-item self-report measure assessing multidimensional emotion dysregulation across six related but distinct facets. Developed by Gratz and Roemer in 2004, it has become a cornerstone transdiagnostic measure in emotion regulation research, capturing emotional avoidance, behavioral dyscontrol, and limited
The Difficulty in Military-to-Civilian Transition Scale measures the severity of adjustment challenges experienced by separating and separated service members. It assesses distress across psychological, social, occupational, and identity domains as individuals transition from military life to civilian society. Used in
The Digital Wellbeing Scale is a multidimensional self-report instrument that assesses positive and negative aspects of technology use, capturing not just problematic behaviors but also digital resources supporting wellbeing. Developed by Azevedo and colleagues in 2022, this scale recognizes that digital engagement exi
The DINA Model (Deterministic Inputs, Noisy Outputs) is a cognitive diagnostic model developed by Junker and Sijtsma (2001) that classifies examinees into latent skill classes based on their item response patterns. DINA assumes a deterministic relationship between skill mastery and correct responses, with probabilistic
The DINO Model (Deterministic Inputs, Noisy Outputs—Disjunctive) is a cognitive diagnostic model that relaxes DINA's conjunctive (AND) skill requirement logic. DINO assumes an examinee only needs to master one of multiple possible skill pathways to answer an item correctly, making it suitable for scenarios where skills
Discriminant validity is evidence that a latent construct is empirically distinct from other constructs it should differ from. Originating in Campbell and Fiske's multitrait-multimethod framework (1959), it is a core component of construct validity and a mandatory check in scale development and structural equation mode
The DES is a 28-item self-report questionnaire designed to measure the frequency and severity of dissociative symptoms, including depersonalization (feeling detached from one's body), derealization (feeling the world is unreal), amnesia, absorption (intense focus), and identity confusion. Developed by Bernstein and Put
The Drift Diffusion Model (DDM) is a mathematical framework for understanding rapid binary decision-making by modeling the accumulation of evidence over time as a random walk with drift. Developed by Roger Ratcliff in the 1970s, it predicts both choice probabilities and response time distributions, providing insight in
The DSES, developed by Underwood and Teresi in 2002, is a 16-item self-report measure designed to capture the frequency and depth of spiritual experiences that occur in everyday life. Unlike scales that measure religious affiliation or institutional participation, the DSES assesses whether and how often individuals rep
The DUREL is a brief, five-item self-report measure of religious involvement developed by Koenig and Büssing in 2010. Designed specifically for epidemiological and health services research, it captures three dimensions of religiosity: organizational religious activity (church attendance), non-organizational religious a
The Dyadic Adjustment Scale is the most widely used self-report instrument for measuring the quality of relationships in married or cohabiting couples. Developed by Graham Spanier in 1976, it captures four fundamental dimensions of relationship functioning: consensus (agreement on key domains), satisfaction (contentmen
The EAT-26 is a 26-item self-report questionnaire designed to assess core attitudes and behaviors characteristic of eating disorders, particularly anorexia nervosa and bulimia nervosa. Developed by Garner and Garfinkel in 1979 and abbreviated to 26 items in 1982, it is widely used for screening eating disorders in comm
The EDE-Q is a 28-item self-report questionnaire derived from the gold-standard Eating Disorder Examination (EDE) interview. Developed by Fairburn and Beglin in 1993, it measures the cognitive, behavioural, and attitudinal features of eating disorders. It is widely used in both research and clinical screening because i
The Edinburgh Postnatal Depression Scale is a 10-item self-report screening questionnaire developed by John Cox, Jeni Holden, and Ruth Sagovsky in 1987 to identify postnatal depression in new mothers. Published in the British Journal of Psychiatry, the EPDS specifically addresses depressive symptoms common in the postp
The Ecological Footprint Knowledge Scale (EFKS) measures individuals' understanding of the ecological footprint concept—how much land and resources one's consumption requires—and knowledge of personal and global footprint impacts. Developed from the ecological footprint framework (Wackernagel & Rees, 1996), the EFKS as
The Environmental Identity Scale (EIS) measures the degree to which individuals incorporate environmental values and ecological concerns into their sense of self—how central environmental stewardship is to personal identity and self-concept. Developed by Clayton (2003) from identity theory and social psychology, the EI
The EDS is a brief self-report measure of emotion dysregulation—difficulty managing and controlling emotional responses. Developed by Silk, Steinberg, and Morris in 2003 in longitudinal adolescent research, it captures emotional lability, emotional negativity, and emotional undercontrol linked to psychopathology and be
The ERQ is a 10-item self-report measure assessing two primary emotion regulation strategies: cognitive reappraisal and expressive suppression. Developed by Gross and John in 2003, it has become a foundational instrument in emotion regulation research, widely used across clinical, developmental, and social psychology.
The Emotion Regulation Questionnaire for Children and Adolescents (ERQ-CA) is a 10-item self-report measure of emotion regulation strategies in children and adolescents ages 10–18 years. Based on Gross's process model of emotion regulation, the ERQ-CA assesses two key strategies: Cognitive Reappraisal (reinterpreting e
The ENRICH (Enriching Relationships: Issues, Communication, Happiness) program is a comprehensive couple assessment and enrichment system developed by David Olson that includes multiple relationship assessment tools. The ENRICH Marital Satisfaction Scale is a subset of the full ENRICH Couple Inventory and measures coup
The Environmental Attitudes Scale, most commonly operationalized as the New Ecological Paradigm (NEP) scale developed by Dunlap and colleagues in 2000, is a self-report measure assessing individual endorsement of an ecologically sustainable worldview. The scale measures beliefs about human-nature relationships, includi
The Existential Well-Being Scale (EWB), developed by Paloutzian and Ellison in 1982, is a 10-item self-report measure of existential meaning and well-being: the sense that one's life has purpose, direction, and intrinsic value. Derived from the larger Spiritual Well-Being Scale (which includes religious well-being), th
Exposure and Response Prevention (ERP) is a behavioral intervention designed to reduce anxiety and compulsive behaviors by having clients repeatedly confront feared situations or intrusive thoughts without engaging in safety behaviors or compulsions. Developed by Edna B. Foa and colleagues in the 1980s, ERP is now cons
Eye-tracking analysis is a method for recording and quantifying eye movements and gaze patterns during visual tasks, providing direct measures of visual attention, comprehension, and cognitive processing. Advancing from mechanical devices to high-speed infrared cameras, eye tracking enables researchers to identify wher
The FACIT-Sp, developed by Peterman and colleagues in 2002, is a 12-item self-report measure of spiritual well-being specifically designed for people with serious illness, particularly cancer. It assesses two dimensions: meaning and peace (the sense that life has purpose and harmony despite illness) and faith (spiritua
The Family Assessment Device is a widely used self-report instrument designed to measure family functioning across six key domains derived from the McMaster Model of Family Functioning. Developed by Epstein, Baldwin, and Bishop in 1983, the FAD assesses problem-solving, communication, roles, affective responsiveness, a
Fear conditioning is a classical (Pavlovian) learning paradigm in which a neutral stimulus (conditioned stimulus, CS—e.g., a tone or image) is repeatedly paired with an aversive outcome (unconditioned stimulus, US—e.g., mild electric shock or loud noise). After conditioning, the CS alone elicits a fear response. Fear c
The Five Facet Mindfulness Questionnaire (FFMQ) is a 39-item self-report instrument designed to measure trait mindfulness across five distinct dimensions: Observing, Describing, Acting with Awareness, Non-judging of Inner Experience, and Non-reactivity to Inner Experience. Developed by Baer and colleagues in 2006 and p