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Case-Cohort Design

Case-cohort design is an epidemiological study design developed by Prentice (1986) that efficiently combines features of case-control and cohort studies. Researchers enroll an entire cohort, follow it for outcomes, then measure exposures only on cases and a random subcohort, reducing measurement costs while maintaining

psychometrics

CAT Cronbach's Alpha

Cronbach's alpha applied to computerized adaptive test (CAT) data estimates internal consistency reliability under the special condition that different examinees receive different subsets of items. Because the classic formula assumes every respondent answers the same items, its direct application to CAT data violates c

psychometrics

CAT Generalizability Theory

Generalizability theory (G-theory) applied to computerized adaptive testing (CAT) evaluates the dependability of adaptive test scores by decomposing score variance across measurement facets such as persons, items, and occasions. Unlike classical test theory, G-theory quantifies multiple simultaneous sources of measurem

psychometrics

CAT McDonald's Omega

McDonald's omega adapted for computerized adaptive testing (CAT) quantifies the reliability of ability or trait estimates when different examinees answer different subsets of items. Unlike Cronbach's alpha, omega is grounded in a factor model, making it suitable for the heterogeneous item pools and variable test length

psychometrics

CAT Scale Development

Computerized adaptive test (CAT) scale development is the process of constructing, calibrating, and validating a large item bank such that the assessment algorithm can select items tailored to each examinee's estimated ability or trait level in real time. The result is a measurement instrument that achieves high precis

psychometrics

CAT Test-Retest Reliability

Computerized adaptive test (CAT) test-retest reliability quantifies the consistency of ability estimates obtained when the same examinees complete a CAT on two separate occasions. Because adaptive algorithms tailor each examinee's item set individually, traditional reliability frameworks must be adapted to account for

psychometrics

CAT-DIF

CAT-DIF identifies items in a computerized adaptive test that behave differently across demographic or group subpopulations after controlling for overall ability. Because adaptive algorithms select items non-randomly based on each examinee's estimated proficiency, standard DIF detection methods require adjustment befor

environmental psychology

CCAS

The Climate Change Attitude Scale (CCAS) measures individuals' beliefs about climate change causation, severity, and human responsibility, as well as attitudes toward climate action and climate policy. Developed by Li and Monroe (2019) as an extension of general environmental attitude scales, the CCAS focuses specifica

clinical psychology

Center for Epidemiologic Studies Depression Scale

The Center for Epidemiologic Studies Depression Scale (CES-D) is a 20-item self-report instrument for measuring depressive symptoms in the general population. Developed by Lenore Radloff in 1977, the CES-D was designed for epidemiological research to rapidly identify depression in community samples. It remains a widely

psychometrics

CFA — Scale Validation

Confirmatory factor analysis is a measurement modelling technique that tests whether a hypothesised factor structure — typically derived from theory or an earlier exploratory analysis — fits observed data from a new sample. Developed by Karl Jöreskog in 1969, it became the dominant tool for validating psychological sca

environmental psychology

CFAS

The Carbon Footprint Awareness Scale (CFAS) measures individuals' knowledge, consciousness, and sense of responsibility regarding their carbon emissions—how much people understand the carbon impacts of their consumption, energy use, and travel patterns. Developed by Collins, Gössling, and Hall (2011) for sustainability

child psychiatry

Childhood Trauma Questionnaire

The Childhood Trauma Questionnaire (CTQ) is a 28-item self-report measure assessing retrospective experiences of childhood abuse and neglect in adolescents and adults. Developed by David Bernstein and colleagues in 1994, the CTQ quantifies five types of maltreatment: physical abuse, emotional abuse, sexual abuse, physi

child psychiatry

Children's Depression Inventory

The CDI is a self-report measure of depressive symptoms in children and adolescents ages 7–17 years. Developed by Maria Kovacs in 1992 and revised in 2011, it is the most widely used screening tool for childhood depression in clinical and research settings. It assesses mood, self-concept, and functional impairment thro

child psychiatry

Children's Yale-Brown Obsessive Compulsive Scale

The Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS) is a 10-item clinician-administered semi-structured interview for assessing obsessive-compulsive symptoms in children and adolescents ages 6–17 years. Developed by Scahill, Riddle, and colleagues in 1997 as a child adaptation of the adult Y-BOCS, the CY-BOC

educational psychology

Classroom Environment Scale

The Classroom Environment Scale is a comprehensive instrument measuring the social, emotional, and organizational climate of educational settings. Developed by Moos and Trickett in 1974, the CES assesses students' or teachers' perceptions of classroom relationships, instructional climate, and classroom management. By p

clinical psychology

Clinical Global Impressions Scale

The Clinical Global Impressions Scale is a clinician-administered two-part assessment developed by William Guy in the ECDEU Assessment Manual (1976) to provide rapid, global ratings of illness severity and treatment response. Part 1 (CGI-Severity) rates current severity; Part 2 (CGI-Improvement) rates change since trea

clinical psychology

Clinician-Administered PTSD Scale

The Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) is the gold standard structured interview for assessing posttraumatic stress disorder (PTSD) in adults. Developed by Weathers, Litz, and Keane, the CAPS-5 directly operationalizes DSM-5 PTSD diagnostic criteria and assesses the frequency and intensity of symptoms

environmental psychology

CNS

The Connectedness to Nature Scale (CNS) measures the degree to which individuals feel emotionally and cognitively connected to nature as part of their sense of self. Developed by Mayer and Frantz (2004), the CNS operationalizes the construct of nature connection—the felt sense of kinship, interdependence, and belonging

mindfulness psychology

Cognitive and Affective Mindfulness Scale

The Cognitive and Affective Mindfulness Scale (CAMS) is a 12-item trait mindfulness measure designed to assess the degree to which individuals are present, aware, and non-judging toward their internal (cognitive and emotional) and external experiences. Developed by Feldman, Hayes, and colleagues at Rutgers University a

psychometrics

Cognitive Diagnosis Model

Cognitive Diagnosis Models (CDMs) are a family of latent variable models designed to classify examinees according to their mastery of a set of discrete cognitive attributes or skills. The Generalized DINA (G-DINA) framework, introduced by Jimmy de la Torre in 2011, provides a unifying structure that encompasses many sp

psychometrics

Cognitive Diagnostic Computerized Adaptive Testing

Cognitive Diagnostic Computerized Adaptive Testing (CD-CAT) combines computerized adaptive testing (CAT) with cognitive diagnostic models (CDMs) to efficiently assess students' specific skill profiles. Rather than producing a single overall ability score, CD-CAT adaptively selects items to quickly identify which skills

neuropsychology

Cognitive Failures Questionnaire

The Cognitive Failures Questionnaire (CFQ) is a 25-item self-report instrument designed to measure the frequency of everyday cognitive lapses and failures in memory, attention, and action slips. Developed by Broadbent and colleagues at the University of Oxford in 1982, the CFQ assesses subjective cognitive complaints i

psychology

Cognitive Reflection Test

The Cognitive Reflection Test (CRT) is a brief measure of cognitive reflection—the ability to override intuitive, reflexive answers in favor of deliberate, analytical reasoning. Participants answer problems that have an intuitive but incorrect answer and a correct answer requiring reflection. The CRT reveals individual

clinical psychology

Cognitive-Behavioral Therapy Assessment

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

psychotherapy research

Collaborative Study Psychotherapy Rating Scale

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

social psychology

Collectivism-Individualism Scale

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

clinical psychology

Columbia Suicide Severity Rating Scale

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

military psychology

Combat Exposure Scale

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

psychotherapy research

Common Factors Questionnaire

The Common Factors Questionnaire (CFQ) is a structured client-report measure that quantifies the client's perception of therapeutic factors deemed common to effective psychotherapy across all modalities—including alliance, therapist empathy, client agency, goal clarity, and emotional expression. Based on Lambert's cont

sport psychology

Competitive State Anxiety Inventory-2

The CSAI-2 is a 27-item instrument measuring three dimensions of state anxiety in sport: cognitive anxiety (worry), somatic anxiety (physiological arousal), and self-confidence. Developed by Martens and colleagues in 1990, it has become the gold standard for assessing pre-competition psychological state and is widely u

psychometrics

Computerized adaptive test construct validity

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

psychometrics

Computerized Adaptive Test Content Validity

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

psychometrics

Computerized Adaptive Test Convergent Validity

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

psychometrics

Computerized adaptive test discriminant validity

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

psychometrics

Computerized adaptive test item analysis

Computerized adaptive test item analysis evaluates and calibrates items intended for use in adaptive testing environments. Unlike fixed-form analysis, it accounts for the non-random item exposure inherent in adaptive administration, using item response theory to estimate item parameters, information functions, and expo

psychometrics

Computerized adaptive test item response theory

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

psychometrics

Computerized adaptive test measurement invariance

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

psychometrics

Computerized adaptive test Rasch model

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

psychometrics

Computerized adaptive test reliability analysis

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

psychometrics

Computerized Adaptive Testing

Computerized Adaptive Testing (CAT) is an individualized assessment methodology in which a computer algorithm selects successive test items based on a running estimate of each examinee's latent ability. Grounded in Item Response Theory, CAT dynamically tailors the item sequence so that each question is optimally inform

psychometrics

Confirmatory factor analysis

Confirmatory factor analysis tests a researcher-specified factor structure against observed data. Unlike exploratory approaches, the researcher decides in advance which indicators load on which latent factor, and the model is evaluated by how closely the implied covariance matrix reproduces the sample covariance matrix

psychometrics

Confirmatory Factor Analysis for Scales

Confirmatory Factor Analysis (CFA) is a statistical method for testing whether a hypothesized factorial structure fits empirical data. Developed by Karl G. Jöreskog in 1969, CFA is the standard approach for validating psychometric scales by evaluating whether items load onto theoretically specified latent factors as ex

social psychology

Conflict Tactics Scale

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

political psychology

Conspiracy Mentality Questionnaire

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

psychometrics

Construct Validity

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

psychometrics

Content Validity

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

psychometrics

Content Validity Ratio

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

psychometrics

Convergent Validity

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

clinical psychology

Corah Dental Anxiety Scale

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

educational psychology

Course Experience Questionnaire

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

educational psychology

Critical Thinking Dispositions Scale

The Critical Thinking Dispositions Scale (CTDS), exemplified by the California Critical Thinking Disposition Inventory (CCTDI), measures the extent to which individuals exhibit cognitive dispositions conducive to critical thinking. Developed by Facione (1992), it assesses dimensions including truth-seeking, open-minded

social psychology

Crowne-Marlowe Social Desirability Scale

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

social psychology

Cultural Intelligence Scale

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

social psychology

Cultural Values Scale

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

social psychology

Dark Triad Scale

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

social psychology

De Jong Gierveld Loneliness Scale

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

military psychology

Deployment Risk and Resilience Inventory

The DRRI-2 is a comprehensive self-report inventory measuring pre-deployment, deployment, and post-deployment risk and protective (resilience) factors influencing mental health outcomes in military personnel. Developed by King and colleagues in 2006 and refined in 2008, it captures contextual, behavioral, social, and p

clinical psychology

Depression Anxiety Stress Scales

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

bereavement psychology

DGS

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

clinical psychology

Dialectical Behavior Therapy

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