d D d prime D trisomy syndrome D-cognition D-love D–KEFS D.A.R.E. D’Acosta’s syndrome d′ DA Da Costa’s syndrome DABS dACC dactylology DAF DAH Test DAI daily stressor daily-living aid DAISY Dale’s law Dallenbach stimulator Dalmane DALYs damage-risk criteria (DRC) damped regression damping dance therapy dancing language dancing madness dancing mania dancing mouse Dandy–Walker syndrome dangerousness dantrolene Daoism DAP Test dark adaptation dark cell dark light dark-adaptation curve darkness fear Darvocet Darvon Darwinian algorithm Darwinian fitness Darwinian reflex Darwinism DAS Dasein Dasein analysis DAST DAT data data analysis data collection data dredging data mining data point data pooling data reduction data screening data set data snooping data types data-driven processing database date rape date-rape drug dative Daubert test Dauerschlaf day blindness day camp day care center day habilitation day hospital day treatment daydream daylight vision daymare dB DBI DBS DBT dc (d/c) DC amplifier DDAVP DDE de Clérambault’s syndrome de Lange syndrome DEA deadly catatonia deadly nightshade deaf hearing deaf mutism–retinal degeneration syndrome deaf-blind deaf-mute deafferentation deafness death death anxiety death concepts death education death feigning death gene death instinct death phobia death rite death system death taboo (death tabu) death wish death-anxiety scales death-qualified jury deathbed escorts and visions deautomatization hypothesis debilitative anxiety Debré–Sémélaigne syndrome debriefing debt counseling decadence Decadron décalage decarboxylase decarceration decatastrophizing decathexis decay theory deceiver’s distrust deceleration decentering decentralization decentralized organization decentration deception deception clue deception research deceptive advertising decerebrate rigidity decerebration decibel decile decision making decision rule decision theory decision-making model of counseling decision–redecision method decisional balance decisional competence decisive moment declarative declarative memory decline effect decoding decompensation decomposition decomposition of movement decompression sickness deconditioning deconstruction decontextualization deconversion decortication decremental conduction decreolization decriminalization decubitus ulcer deculturation decussation dedifferentiation deduction deductive reasoning deductive-nomological model deep body temperature deep brain stimulation (DBS) deep cerebellar nucleus deep depression deep dyslexia deep processing deep reflex deep sensibility deep sleep deep structure deep trance deep vein thrombosis (DVT) deep-pockets effect deep-pressure sensitivity Deese–Roediger–McDermott paradigm default-mode network (DMN) defecation reflex defect orientation defect theory defectology defender strategy defense defense interpretation defense mechanism defense reflex defensible space defensive aggression defensive attribution defensive behavior defensive conditioning defensive identification defensive processing defensiveness deferred imitation deferred prosecution deficiency deficiency cognition (D-cognition) deficiency love (D-love) deficiency motivation deficiency motive deficiency need deficient processing theory definite article definition definitional formula definitional validity deformity degeneracy degenerating axon degeneration degenerative status deglutition degradation degraded stimulus degrees of freedom degrees of freedom problem dehoaxing dehumanization dehydration dehydration reactions dehydrogenase deictic deification deindividuation deinstitutionalization deism Deiters cells deixis déjà vécu déjà vu delay conditioning delay of gratification delay of reinforcement delay-of-reward gradient delayed alternation task delayed auditory feedback (DAF) delayed conditioning delayed development delayed effect delayed ejaculation delayed feedback delayed matching to sample (DMTS) delayed parenthood delayed posttraumatic stress disorder delayed recall delayed reflex delayed reinforcement delayed response delayed response alternation delayed speech Delboeuf illusion delegation of authority deletion deliberate psychological education (DPE) deliberate sampling deliberate self-harm (DSH) deliberative mind-set delinquency délire de négation délire du toucher deliriant delirium delirium of persecution delirium tremens (DTs) Delis–Kaplan Executive Function System (D–KEFS) delivery Delphi technique delta delta alcoholism delta movement delta opioid receptor delta rule delta wave delta-9-tetrahydrocannabinol deltoid delusion delusion of being controlled delusion of grandeur delusion of influence delusion of negation delusion of observation delusion of persecution delusion of poverty delusion of reference delusion of sin delusion system delusional disorder delusional jealousy delusional mania delusional misidentification syndrome delusional parasitosis delusional system demand demand characteristics demand feeding demand reduction demand–withdraw pattern demandingness demandment demasculinization démence précoce dementia dementia of the Alzheimer’s type (DAT) dementia paralytica dementia praecox dementia pugilistica Dementia Rating Scale (DRS) dementia syndrome of depression Demerol Deming management method demo- (dem-) democracy democratic atmosphere democratic leader democratic parenting demographic research demography demonic possession demonolatry demonology demonomania demonstration experiment demoralization demoralization hypothesis demotivation demyelinating disease demyelination demyelination plaque denasality dendrite dendritic pathology dendritic potential dendritic spine dendritic zone dendrodendritic synapse dendrogram dendrophilia denervation denervation sensitivity denial denial stage denotative meaning density density curve density function density-intensity hypothesis dent- dental dental age dental lisp dental pattern dental phobia dentate gyrus dentate nucleus denti- (dent-) deoxycorticosterone deoxyglucose deoxyribonucleic acid Depacon Depakene Depakote dependence dependency court dependency need dependency ratio dependent events dependent groups dependent model dependent personality disorder dependent samples dependent variable (DV) dependent-part quality dependent-samples t test depersonalization depersonalization disorder depersonalization syndrome depersonification depletive treatment Deplin deployment psychology Depo-Provera depolarization deprenyl depressant depressed skull fracture depression depression stage depressive anxiety depressive disorder depressive episode depressive neurosis depressive personality disorder depressive position depressive reaction depressive spectrum depressor nerve deprivation deprivation index deprogramming depth cue depth from motion depth from shading depth interview depth perception depth psychology depth therapy depth-first search depth-of-processing hypothesis depth-oriented brief therapy Deracyn derailment derangement derealization dereflection dereism derivation sample derivative derived ideas derived need derived property derma dermal sensation dermal sensitivity dermato- (dermo-) dermatoglyphics dermatographism dermatological disorder dermatome dermis dermo-optical perception (DOP) dermographia DES descending pathway descending reticular system descending tract descent group deschooling descriptive approach descriptive average descriptive behaviorism descriptive discriminant analysis descriptive grammar descriptive norm descriptive operant descriptive research descriptive responsibility descriptive science descriptive statistics deseasonalization desegregation desensitization desensitizing desertion desexualization design design and behavior design fluency test design for adjustable range design for the average design matrix design trade-off designer children designer drug desipramine deskilling desmopressin desocialization Desoxyn despair despondency destiny and growth beliefs destructive obedience destructiveness desymbolization desynchronization desynchronized sleep Desyrel DET detached character detached retina detachment detail perspective detailed inquiry detection task detection theory detection threshold deterioration deterioration effect deterioration index deterioration of attention deterioration quotient determinant determinant of elaboration determination determination coefficient determiner determining tendency determinism deterministic model deterministic process deterministic psychology deterrence deterrent therapy detour problem detoxification detrending detumescence Detussin deutan color blindness deuteranomaly deuteranopia deutero- (deuter-; deut-) deutoplasm devaluation development development cycle developmental acceleration developmental age (DA) developmental amblyopia developmental amnesia developmental aphasia developmental apraxia of speech (DAS) developmental articulation disorder developmental assessment developmental cognitive neuroscience developmental contextual model developmental coordination disorder developmental crisis developmental delay developmental disability developmental dysgraphia developmental dyslexia developmental dysphasia developmental dyspraxia developmental factors developmental function developmental immaturity developmental invariance developmental language disorder developmental levels developmental measure developmental milestone developmental norm developmental orientation developmental pharmacokinetics developmental psycholinguistics developmental psychology developmental psychopathology developmental quotient (DQ) developmental readiness developmental reading disorder developmental retardation developmental scale developmental schedules developmental science developmental sequence developmental stage developmental systems approach developmental task developmental teaching model Developmental Test of Visual–Motor Integration (VMI) developmental theory developmental therapy developmental toxicology developmental trauma disorder (DTD) developmental verbal dyspraxia (DVD) developmental visual agnosia developmental-behavioral pediatrics deviance deviance information criterion (DIC) deviancy training deviant sexuality deviant verbalization deviate deviation deviation IQ deviation score device for automated desensitization devil’s trumpet DEX dexamethasone dexamethasone suppression test (DST) dexamphetamine Dexedrine dexterity test dextrality dextro- (dextr-) dextroamphetamine dextromethorphan dextrosinistral df dharma dhat DHE 45 DHT di- dia- diabetes insipidus diabetes mellitus diabetic enteropathy diabetic gastropathy diabetic retinopathy diacetylmorphine diachronic linguistics diachronic universal diacritical marking system (DMS) diadochokinesis diagnosis (Dx) diagnosis-related groups (DRGs) Diagnostic Adaptive Behavior Scale (DABS) Diagnostic and Statistical Manual of Mental Disorders diagnostic audiometry diagnostic baseline diagnostic center diagnostic educational tests diagnostic formulation diagnostic interview Diagnostic Interview Schedule (DIS) diagnostic orphan diagnostic overshadowing diagnostic prescriptive education diagnostic test diagnosticity diagnostics dialect dialectic dialectical behavior therapy (DBT) dialectical materialism dialectical operations dialectical teaching dialectology Diallinas–Amalric syndrome dialogue (dialog) dialysis dementia diamorphine dianetics dianoia diaphragm diary method diaschisis diastolic blood pressure diathesis diathesis–stress model diatonic diazepam diazepam-binding inhibitor (DBI) dibenzodiazepine dibenzothiazepine dibenzoxazepine DIC DICE model dichoptic stimulation dichorhinic dichorial twins dichotic dichotic listening dichotomized variable dichotomous thinking dichotomous variable dichromatism (dichromacy; dichromasy; dichromatopsia) dichromic DID didactic group therapy didactic teaching diencephalic amnesia diencephalon diestrus diet dietary neophobia dietary selection diethylpropion diethylstilbestrol (DES) diethyltryptamine dieting DIF difference canon difference hypothesis difference judgment difference score difference threshold difference tone Differential Ability Scales (DAS) differential accuracy differential amplifier Differential Aptitude Tests (DAT) differential association differential conditioning differential diagnosis differential effect differential emotions theory differential extinction differential fertility differential growth differential inhibition differential item functioning (DIF) differential psychology differential reinforcement differential reinforcement of alternative behavior (DRA) differential reinforcement of high rate (DRH) differential reinforcement of low rate (DRL) differential reinforcement of other behavior (DRO) differential relaxation differential validity differential-organization theory differentiation differentiation theory differentiation–dedifferentiation hypothesis diffraction diffraction grating diffuse axonal injury (DAI) diffuse bipolar cell diffuse thalamic projection system (DTPS) diffuse-status characteristic diffusion diffusion magnetic resonance imaging (dMRI) diffusion model diffusion of responsibility diffusion of treatments diffusion process diffusion status diffusion tensor imaging (DTI) digestion digestive type digit span Digit Span Digit Symbol digital Digital Accessible Information SYstem (DAISY) digital computer digital divide digital subtraction angiography digitized speech diglossia digraph dihydrocodeine dihydroergotamine dihydromorphine dihydrotestosterone dihydroxyphenylacetic acid dihydroxytryptamine (DHT) Dilantin dilation dilator dildo dilemma dilution effect dimenhydrinate dimension dimensional theory of emotion dimensionality dimensions of consciousness dimer dimethoxymethylamphetamine dimethyl ketone dimethyltryptamine diminished capacity diminished responsibility diminutive visual hallucination dimming effect dimorphism DIMS DIN color system dinitrogen monoxide Dionysian diopter dioptrics diotic diphenhydramine diphenylbutylpiperidine diphenylmethane diphthong diplacusis diplegia diplo- (dipl-) diploid diplomate diplopia dipsomania direct aggression direct attitude measure direct coping direct correlation direct dyslexia direct glare direct marketing direct memory test direct model direct object direct observation direct odor effect direct perception direct realism direct reflex direct relationship direct replication direct scaling direct selection direct suggestibility direct suggestion direct-contact group directed attention directed discussion method directed forgetting directed graph directed masturbation directed movement directed reverie directed thinking directedness direction circular direction perception directional confusion directional hypothesis directional test directionality problem directions test directive directive counseling directive discipline directive group psychotherapy directive leader directive play therapy directive therapy director Directory of Psychological Tests in the Sport and Exercise Sciences dirhinic dirt phobia DIS disability disability adjusted life years (DALYs) disability evaluation disability laws Disability Rating Scale (DRS) disadvantaged disaggregation disarranged-sentence test disaster disaster counseling disaster psychology disavowal discharge discharge of affect discharge planning discharge procedure discharge rate dischronation disciple discipline discomfort anxiety disconfirmability disconnection syndrome discontinuity effect discontinuity hypothesis discontinuous discontinuous variable discordance discounting principle discourse discourse analysis discourse routine discovery discovery learning discovery method discovery of new means through active experimentation discrepancy evaluation discrepancy principle discrepant stimulus discrete discrete control discrete distribution discrete measure discrete movement task discrete trial discrete variable discretionary task discriminal dispersion discriminanda discriminant analysis discriminant function discriminant loading discriminant validity discriminated avoidance discriminated operant discriminating power discrimination discrimination index discrimination learning discrimination of cues discrimination reaction time discrimination training discriminative learning discriminative response discriminative stimulus discursive psychology discussion group discussion method disease disease course disease management disease model disease of adaptation disease phobia disenfranchised grief disengaged family disengagement disengagement theory disequilibrium disesthesia disfigurement disgust dishabituation dishonest signal disidentification disincentive disinformation disinhibited feedback theory disinhibited social engagement disorder disinhibition disintegration disjoint sets disjunctive concept disjunctive motivation disjunctive task dismissive attachment disorder disorder of written expression disorders of excessive somnolence (DOES) disorders of initiating and maintaining sleep (DIMS) disorders of the self disorders of the sleep–wake cycle schedule disorganization disorganized attachment disorganized behavior disorganized development disorganized offender disorganized schizophrenia disorganized speech disorientation disoriented attachment disparate impact disparate sensations dispersal dispersion dispersion matrix dispersion measure dispersion parameter displaced aggression displacement displacement behavior displacement of affect display display design display rule display–control compatibility disposition dispositional attribution dispositional hearing disrupt-then-reframe technique disruptive behavior disruptive behavior disorder disruptive mood dysregulation disorder dissent dissimilarity coefficient dissociated learning dissociated state dissociation dissociative amnesia dissociative anesthetic dissociative barriers dissociative disorders dissociative fugue dissociative group dissociative hysteria dissociative identity disorder (DID) dissociative pattern dissociative psychosis dissociative stupor dissociative trance disorder dissonance dissonance reduction distal distal 18q- distal effect distal response distal stimulus distance distance cue distance learning distance measure distance paradox distance perception distance therapy distance vision distance zone distinctiveness effect distinctness distorted speech test distorting-photograph procedure distortion distractibility distractible speech distraction distractor distractor task distress distress tolerance distributed actions theory distributed attention distributed cognition distributed knowledge distributed practice distributed processing distributed representation distributed-practice effect distribution distribution function distribution-free test distributional redundancy distributive analysis and synthesis distributive bargaining distributive justice disturbance of association disturbance term disulfiram disuse supersensitivity disuse theory of aging disynaptic arc diuretic diurnal diurnal enuresis diurnal mood variation diurnal rhythm divagation divalproex sodium divergence divergent evolution divergent production divergent strabismus divergent thinking divergent validity diversion program diversity diversity training diversive exploration divided attention divided brain divided consciousness divination divine right diviner’s sage divorce divorce counseling divorce mediation dizygotic twins (DZ twins) dizziness DL DLPFC DMN dMRI DMS DMT DMTS DNA DNA methylation DNR docility doctor shopping doctrine doctrine of causes doctrine of double effect (DDE) doctrine of formal discipline Doerfler–Stewart test DOES dogmatism dol dolichocephalic dolichomorphic doll play Dolophine dolorimeter DOM domain domain identification domain-free problem domain-general ability domain-referenced test domain-specific ability domain-specific knowledge domestic partnership domestic violence domestication domiciliary care dominance dominance aggression dominance hierarchy dominance need dominance–submission dominance–subordination dominant allele dominant eye dominant hemisphere dominant ideology thesis dominant wavelength dominatrix Don Juan don’t-hold functions Donders’s law Donders’s method donepezil dong quai donor insemination door-in-the-face technique DOP dopa (DOPA) dopa decarboxylase dopac (DOPAC) dopamine (DA) dopamine hypothesis dopamine receptor dopamine system dopamine-receptor agonist dopamine-receptor antagonist dopaminergic dopaminergic agent Dopar Doppelganger phenomenon Doppler effect Dora case Doral Doriden dorsal dorsal anterior cingulate cortex dorsal column dorsal column system dorsal horn dorsal posterior cingulate cortex dorsal root dorsal stream dorsal tegmental bundle dorsiflexion dorsolateral dorsolateral column dorsolateral prefrontal cortex (DLPFC) dorsomedial nucleus (DMN) dorsoventral dose–response relationship dot figure dot plot dotting test double double alternation double approach–avoidance conflict double bind double blind double bootstrapping double consciousness double deception double depression double dissociation double entendre double helix double image double insanity double personality double predestination double standard double vision double-approach conflict double-aspect theory double-avoidance conflict double-simultaneous stimulation double-simultaneous tactile sensation double-Y condition doubling doubt doubting obsession doula Down syndrome down through down-regulation downer downward communication downward drift hypothesis downward mobility downward social comparison dowry dowsing doxepin doxylamine dPCC DPE DQ DRA drama therapy Dramamine dramatics dramatization drawing disability DRC DRD2 gene dread dream dream analysis dream anxiety disorder dream censorship dream content dream deprivation dream ego dream incorporation dream interpretation dream stimulus dream suggestion dream-work dreamy state dressing aid dressing apraxia DRGs DRH drift drift hypothesis drifting attention drill drinking aid drinking episode drinkometer drive drive discrimination drive displacement drive state drive stimulus drive strength drive theory drive-induction theory drive-reduction theory driver training DRL DRO dromomania dronabinol drone drop-in center droperidol dropout Drosophila drowsiness DRS drug drug abuse Drug Abuse Resistance Education Drug Abuse Screening Test (DAST) drug abuse treatment drug addiction drug court drug culture drug dealer drug dependence drug discrimination drug education drug holiday drug interactions drug interdiction drug metabolism drug rehabilitation drug screening instrument drug self-administration drug subculture drug synergism drug therapy drug tolerance drug trafficking drug withdrawal drug-induced amnesia drug-induced lactation drug-induced parkinsonism drug-induced psychosis drug-seeking behavior dry eyes DS DSH DSM–5 DSM–IV–TR DST DTD DTI DTPS DTs dual careers dual coding theory dual consciousness dual diagnosis dual encoding dual instinct theory dual memory theory dual orientation dual personality dual process model of persuasion dual process theory dual process theory of color vision dual relationship dual representation dual scaling dual thresholds dual trace hypothesis dual-action antidepressant dual-aspect physicalism dual-attitude model dual-store model of memory dual-task competition dual-task performance dualism duality of language Duchenne muscular dystrophy Duchenne smile duct ductless gland ductus deferens due process due process model dull normal dummy dummy variable dummy variable coding Duncan’s multiple range test (Duncan’s MRT) Dunn–Bonferroni procedure Dunn–Šidák procedure Dunn’s multiple comparison test Dunnett’s multiple comparison test duplex theory dura mater durable power of attorney Duragesic duration of untreated illness duress Durham rule Dusky standard dustbowl empiricism Dutch Hunger Winter duty to protect duty to warn DV DVD Dvorak keyboard DVT dwarfism Dx dyad (diad) dyadic accuracy dyadic effect dyadic relationship dyadic session dyadic therapy dying phobia dying process dynamic dynamic anthropometry dynamic assessment dynamic calculus dynamic core dynamic effect law dynamic equilibrium dynamic formulation dynamic interactionism dynamic kinesthetic imagery dynamic model dynamic psychology dynamic psychotherapy dynamic self-distribution dynamic skill theory dynamic social impact theory dynamic system dynamic systems theory dynamic testing dynamic touch dynamic trait dynamic unconscious dynamic visual display dynamics dynamogenesis dynamometry dynorphin dys- dysacusis dysaesthesia dysarthria dysautonomia dysbasia dysbulia dyscalculia dyscheiria (dyschiria) dyschromatopsia dysconjugate gaze dyscontrol dysdiadochokinesis dyseidetic dyslexia dysesthesia (disesthesia; dysaesthesia) dysexecutive syndrome (DES) dysfluency dysfunction dysfunctional family dysfunctions associated with sleep, sleep stages, or partial arousals dysgenic dysgeusia dysgnosia dysgrammatism dysgraphia dyskinesia dyskinetic dysarthria dyslexia dyslogia dysmenorrhea dysmetria dysmetropsia dysmnesia dysmorphism dysmorphophobia dysnomia dysorexia dysorthographia dysosmia dysostosis dyspareunia dyspepsia dysphagia dysphagia spastica dysphasia dysphemia dysphonetic dyslexia dysphonia dysphoria dysphrasia dysplastic type dyspnea dysponesis dyspraxia dysprosody (dysprosodia) dysregulation dysrhythmia dyssemia dyssocial behavior dyssocial personality dyssomnia dysspermia dystaxia dysthymia dysthymic disorder dystocia dystonia dystopia dystrophia myotonica dystrophin dystrophy dysuria DZ twins