The Core Validated Psychological Assessments Every Clinic Should Offer

A well-equipped clinic keeps a small, dependable set of validated psychological assessments ready for daily use. Validated instruments are standardised, researched for reliability and validity, and interpreted against published norms, which is what makes their results defensible. This overview walks through the core measures every practice should be able to offer and explains how a digital platform brings them together.

Why validated instruments matter

An assessment is only as trustworthy as the evidence behind it. Validated tools have documented reliability and validity, established cut-off scores, and normative data that let a clinician say what a score means. Using ad hoc questionnaires may feel efficient, but it sacrifices comparability and defensibility. Standardised measures also underpin measurement-based care, where the same instrument is repeated over time to track progress.

Depression measures

BDI-II (Beck Depression Inventory-II)

A 21-item self-report scale measuring depression severity over the past two weeks. See the BDI-II guide for scoring and cut-offs.

PHQ-9 (Patient Health Questionnaire-9)

A brief nine-item screener widely used in primary care, mapped directly to DSM depression criteria. See the PHQ-9 guide.

Anxiety measures

BAI (Beck Anxiety Inventory)

A 21-item measure focused on somatic and cognitive symptoms of anxiety, useful for distinguishing anxiety from depression. See the BAI guide.

Multi-domain and specialist measures

DASS-21

A 21-item scale giving separate subscales for depression, anxiety and stress in a single administration. See the DASS-21 guide.

Y-BOCS

The Yale-Brown Obsessive Compulsive Scale, the standard clinician-rated measure of obsessive-compulsive symptom severity. See the Y-BOCS guide.

MMSE (Orientation section)

The orientation section of the Mini-Mental State Examination, a clinician-administered check of orientation to time and place. LetPsyc runs this section only (10 of 30 points), so the standard 24/30 cut-off does not apply.

RISB

The Rotter Incomplete Sentences Blank, a projective sentence-completion measure of adjustment and personality themes, coded by the clinician.

The full library, by category

LetPsyc currently offers 49 validated assessments across 11 clinical categories. Each one below is administered, scored and reported on the platform. Interpretation stays with the qualified clinician.

Broad Screening & Triage

Cast a wide net at first contact. Screens many domains at once to show what warrants a focused assessment next.

• GREAT-25 (GREAT-25 — Gateway to Referral, Evaluation, Assessment & Treatment): Multidomain screening and clinical routing across 19 psychological and psychosocial domains, to identify what warrants further assessment.

Depression & Mood

Screen for and grade depressive symptoms, including perinatal and older-adult presentations.

• BDI-II (Beck Depression Inventory-II): Grades depression severity across 21 symptom groups.
• DASS-21 (Depression Anxiety Stress Scales-21): Measures depression, anxiety and stress as three separate dimensions over the past week.
• EPDS (Edinburgh Postnatal Depression Scale): Screens for symptoms of emotional distress and depression during pregnancy and the postnatal period, over the past 7 days.
• GDS-15 (Geriatric Depression Scale (Short Form)): Screens for depression in older adults, over the past week.
• K10 (Kessler Psychological Distress Scale (K10)): Brief 10-item screen for non-specific psychological distress over the past 4 weeks.
• MDQ (Mood Disorder Questionnaire): Screens for a lifetime history of manic or hypomanic symptoms.
• PHQ-9 (Patient Health Questionnaire-9): Screens for and grades the severity of depression in adults.

Anxiety & Stress

Generalised worry, social anxiety, childhood anxiety and perceived stress.

• BAI (Beck Anxiety Inventory): Measures the severity of somatic and cognitive anxiety symptoms.
• GAD-7 (Generalized Anxiety Disorder-7): Screens for and grades the severity of generalised anxiety in adults.
• PSS-10 (Perceived Stress Scale): Measures the degree to which situations in one's life are appraised as stressful, over the past month.
• PSWQ (Penn State Worry Questionnaire): Measures the trait tendency to worry excessively, uncontrollably and generally.
• SCARED (Screen for Child Anxiety Related Disorders (Child Version)): Screens children for anxiety disorders — panic/somatic, generalized anxiety, separation anxiety, social anxiety and school avoidance — over the last 3 months.
• SPIN (Social Phobia Inventory): Measures the severity of social anxiety (social phobia) symptoms over the past week.
• Y-BOCS (Yale-Brown Obsessive Compulsive Scale): Clinician-rated severity of obsessions and compulsions.

Suicide & Risk

Structured suicide-risk screening. Always followed by clinical interview.

• C-SSRS Screener (Columbia-Suicide Severity Rating Scale, Screen Version (Since Last Contact)): Structured interview for suicidal ideation and behaviour since the last contact, with Columbia triage levels.
• SBQ-R (Suicide Behaviors Questionnaire-Revised): Four-item screen for lifetime and current suicide risk across ideation, planning, communication and future likelihood.

Trauma & Dissociation

PTSD symptoms, adverse childhood experiences and dissociative phenomena.

• ACE (Adverse Childhood Experiences Questionnaire for Adults): Counts categories of adverse childhood experiences (before age 18) associated with later health risk.
• DES-II (Dissociative Experiences Scale-II): Measures the frequency of dissociative experiences in daily life.
• PCL-5 (PTSD Checklist for DSM-5): Screens for and monitors the 20 DSM-5 symptoms of PTSD in adults with a known stressful experience.

Substance Use

Drug and alcohol screening, plus withdrawal severity monitoring.

• ASSIST (Alcohol, Smoking and Substance Involvement Screening Test (drug-only adaptation)): Screens for problematic use across 10 illicit and prescription drug classes, and for injecting drug use.
• AUDIT (Alcohol Use Disorders Identification Test): Screens for hazardous and harmful drinking and possible alcohol dependence.
• CIWA-Ar (Clinical Institute Withdrawal Assessment for Alcohol, Revised): Quantifies the severity of alcohol withdrawal to guide pharmacotherapy and monitor its course.
• DAST-10 (Drug Abuse Screening Test): Screens for drug abuse (excluding alcohol) over the past 12 months.
• MAST (Michigan Alcohol Screening Test): Screens for lifetime alcohol-related problems and alcohol dependence.

Neurodevelopmental

ADHD and autism screening across toddlers, children and adults.

• ADHD Checklist (ADHD Symptom Checklist (DSM-5)): DSM-5 inattention and hyperactivity symptom counts.
• ASRS-v1.1 (Adult ADHD Self-Report Scale (ASRS-v1.1)): WHO screener for adult ADHD. Part A (6 items) is the validated screen; Part B provides further clinical probes.
• BGT (Bender-Gestalt Test (clinician scoring)): Error scoring for a visuomotor reproduction task administered on paper.
• CARS-2 (Childhood Autism Rating Scale, 2nd Edition): Clinician-rated autism severity from observation and history.
• M-CHAT-R (Modified Checklist for Autism in Toddlers, Revised): Parent-report screen for autism spectrum disorder risk in toddlers aged 16-30 months.
• MMSE (Orientation) (Mini-Mental State Examination — Orientation section): Orientation to time and place. Partial administration only.
• RAADS-R (Ritvo Autism Asperger Diagnostic Scale-Revised): Self-report screen to assist the diagnosis of Autism Spectrum Disorder in adults.
• Vanderbilt (Parent) (NICHQ Vanderbilt Assessment Scale — Parent Informant): Screens for ADHD (inattentive/hyperactive-impulsive/combined) and the co-morbid oppositional-defiant, conduct and anxiety/depression symptom screens, plus school/relationship performance.

Psychosis & Severe Illness

Clinician-rated symptom severity for psychotic and severe presentations.

• BPRS (Brief Psychiatric Rating Scale (18-item)): Clinician-rated assessment of positive, negative and affective symptoms in psychotic disorders, especially schizophrenia; used to track treatment response.
• PANSS (Positive and Negative Syndrome Scale): Clinician-rated symptom severity in psychosis across 30 items.

Personality & Coping

Traits, self-esteem, emotion regulation, mindfulness and coping style.

• Big Five (IPIP-50 Big-Five Factor Markers): Five broad personality traits on a 0–40 scale each.
• Brief COPE (Brief COPE (Coping Orientation to Problems Experienced)): Profiles 14 distinct coping strategies used to deal with a current stressor.
• ERQ (Emotion Regulation Questionnaire): Measures habitual use of two emotion regulation strategies: cognitive reappraisal and expressive suppression.
• RISB (Rotter Incomplete Sentences Blank): Projective sentence completion, coded by the clinician into an Overall Adjustment Score.
• RSES (Rosenberg Self-Esteem Scale): Measures global self-worth through positive and negative feelings about oneself.
• Symptom Screener (Symptom Domain Screener): Brief symptom review across ten domains.
• TAS-20 (Toronto Alexithymia Scale): Measures alexithymia — difficulty identifying and describing feelings, and externally-oriented thinking.

Somatic & Eating

Physical symptom burden and eating-disorder screening.

• EDE-Q 6.0 (Eating Disorder Examination Questionnaire): Measures the range and severity of eating-disorder features (restraint, eating concern, shape concern, weight concern) over the past 28 days.
• SSS-8 (Somatic Symptom Scale-8): Brief measure of somatic symptom burden over the past 7 days.

Functioning & Wellbeing

Day-to-day impairment, disability, life satisfaction and social support. Best repeated to track change.

• MAAS (Mindful Attention Awareness Scale): Measures the trait tendency toward receptive, present-moment attention and awareness (a core characteristic of mindfulness).
• MSPSS (Multidimensional Scale of Perceived Social Support): Measures perceived adequacy of social support from family, friends and a significant other.
• SWLS (Satisfaction With Life Scale): Measures global cognitive judgments of satisfaction with one's life.
• WHODAS 2.0 (WHO Disability Assessment Schedule 2.0 (36-item, self-administered)): Measures functioning and disability across six domains of daily life over the past 30 days.
• WSAS (Work and Social Adjustment Scale): Measures how much a problem impairs day-to-day functioning across five life domains.

A quick comparison

At a glance, here is how the core measures differ in purpose and length:

• PHQ-9: depression screen, 9 items, self-report.
• BDI-II: depression severity, 21 items, self-report.
• BAI: anxiety severity, 21 items, self-report.
• DASS-21: depression, anxiety and stress, 21 items, self-report.
• Y-BOCS: OCD severity, clinician-rated.
• MMSE (Orientation): partial cognitive check, 10 of 30 points, clinician-administered.
• RISB: personality and adjustment, projective sentence completion.

How to choose what your clinic needs

Most general practices start with a screening pair (PHQ-9 and K10) and add severity measures (BDI-II, BAI, DASS-21) as caseloads grow. Specialist services add Y-BOCS, RISB, or the psychosis, neurodevelopmental and trauma measures in the library above, as their populations require. Our guide on how to choose assessment software covers selection in more depth.

How digital platforms unify them

Maintaining separate paper stocks, scoring keys and filing systems for each instrument is a real administrative burden. A digital platform such as LetPsyc keeps all these validated assessments in one place, administers them on any device, scores them instantly and produces a consistent clinical PDF report for each. For clinics in Pakistan and the wider region, this consolidation is a practical way to reduce clinical paperwork without compromising rigour.

Key takeaways

• Validated instruments carry documented reliability, validity and norms, which makes their results defensible.
• A core clinic set spans depression, anxiety, multi-domain, OCD, cognitive, projective and personality measures.
• Start with brief screeners and add severity and specialist measures as needs grow.
• A digital platform unifies administration, scoring and reporting across every instrument.
• Assessments support clinical judgement; they do not replace it.