6.4 Comprehensive Assessment Instruments

6.4 Comprehensive Assessment Instruments

Quick Answer: The ADC candidate guide's examples for Domain II.B include the Addiction Severity Index (ASI), the Substance Abuse Subtle Screening Inventory (SASSI), and the Adverse Childhood Experiences (ACE) questionnaire. Know what each does and does not diagnose. ASI maps seven problem areas. SASSI yields high or low probability of a substance use disorder. ACE counts 10 childhood categories (score 0–10) as a trauma screen, not PTSD.

Brief screens (AUDIT, CAGE, DAST, ASSIST) answer "look further?" Comprehensive instruments answer "how is this person's life organized around substances, health, and trauma risk?" They still do not replace DSM-5-TR criteria for a substance use disorder. That diagnostic job is a later Domain II chapter. Putting "severe OUD" in the chart solely because an ASI drug composite is high is the same category of error as diagnosing from an AUDIT of 12.

Addiction Severity Index (ASI): seven problem areas

A. Thomas McLellan and colleagues designed the Addiction Severity Index as a semi-structured interview for treatment intake and outcome tracking. Classic clinical versions (widely taught as ASI-5) use two time windows: the past 30 days and lifetime. Typical full interviews run on the order of 45–60 minutes; an ASI-Lite shortens the item set. Multimedia versions exist; the exam cares about the seven domains, not the software vendor.

The seven potential problem areas are:

Alcohol and drug are two areas, not one "substance" blob. Psychiatric is not a DSM diagnosis; it is a problem-density interview (including suicide items that may require an immediate pause, as in 6.1).

What the ASI produces

For each area the ASI traditionally yields:

• Interviewer severity ratings (commonly 0–9): the interviewer's 0–9 judgment of need for treatment in that area.
• Composite scores (0–1): mathematically derived from selected recent items, used especially for research and outcome comparison.
• Client ratings of how bothered they have been and how important treatment is in that area (often 0–4).

Those numbers describe how much problem is reported, not which DSM-5-TR criteria are met. A high psychiatric composite does not equal schizophrenia. A low alcohol composite does not prove the person is a safe driver. Collateral (family, records, toxicology) can contradict self-report; the ASI is an interview, not a lie detector.

Worked ASI reading

A 38-year-old in outpatient intake reports daily fentanyl, two overdoses this year, no alcohol in five years, unstable housing, an open child-welfare case, and daily panic. Expect drug, family/social, employment/support, and psychiatric areas to look severe, and alcohol to look low. The clinical error is averaging the seven areas into one "medium addiction score." The clinical use is to target MOUD evaluation, housing, family services, and a mental-health assessment — and still complete DSM criteria for opioid use disorder separately.

SASSI: probability, face-valid items, and subtle scales

The Substance Abuse Subtle Screening Inventory is a structured questionnaire. The current adult version is SASSI-4 (ages 18+; often described as about 15 minutes; fourth-to-fifth-grade reading level on publisher materials). SASSI-A3 is the adolescent version. Spanish-language SASSI forms exist; use the version your agency is trained to score.

SASSI-4 is built to classify high versus low probability of a substance use disorder, including in people who minimize. It uses:

• Face-valid scales — items that obviously ask about substance use and consequences. A defensive person can keep these low.
• Subtle scales — items that do not shout "this is a drug test," capturing response patterns associated with SUD even when admission is limited.
• Additional clinical scales on SASSI-4, including a prescription drug scale and indicators of defensiveness and profile validity.

Publisher materials describe SASSI-4 as screening along the DSM-5 continuum of SUD probability. That is still not the same as a clinician assigning mild, moderate, or severe SUD from the 11 diagnostic criteria. A person in stable recovery may still score high probability because subtle traits do not vanish the day after the last use — the SASSI Institute has said the instrument cannot determine whether someone is currently drinking. Do not tell a client "SASSI proves you used this week."

SASSI does not diagnose PTSD, gambling disorder, or a personality disorder. It does not replace the ASI's seven-area map. It is a probability screen with defensiveness detection, which is why the ADC guide lists it next to ASI and ACE as an established method.

ACE questionnaire: the trauma screen named on the ADC guide

The ADC candidate guide's Domain II.B examples include ACE. In practice that means the Adverse Childhood Experiences questionnaire from the CDC–Kaiser work published by Felitti and colleagues (1998), not a random trauma anecdote.

The original instrument counts 10 categories of experience before age 18. Each category endorsed adds 1 point. Total 0–10. Categories group as:

• Abuse: emotional, physical, sexual.
• Neglect: emotional, physical.
• Household challenges: intimate-partner violence toward the mother/stepmother in the original wording, household substance use, household mental illness, parental separation or divorce, incarcerated household member.

An ACE score is a count of categories, not a measure of how often or how severe each event was. Original population research showed a dose-response pattern: higher ACE counts associated with higher adult rates of substance use problems, depression, and some medical diseases. A score of 4 or more is often discussed as substantially elevated risk in that literature. That is epidemiology, not a personal prophecy and not a diagnosis.

How you administer ACE matters. Asking all 10 items in a crowded waiting room, or with an abusive partner present, can be harmful. Introduce why you are asking, warn that questions may be upsetting, and pause if the person becomes unsafe or dissociated. A high ACE score is a reason to use trauma-informed pacing and to screen for PTSD symptoms later — not a reason to start exposure therapy during detox paperwork.

What these instruments do not diagnose — exam traps

If the stem asks for diagnosis, the path is DSM-5-TR criteria (11 SUD criteria; severity 2–3 / 4–5 / 6+), not a higher ACE or a SASSI high-probability flag. If the stem asks for which life areas are in trouble, ASI is the better match than AUDIT. If the stem asks for a defensive minimizer who denies face-valid items, SASSI's subtle scales are the reason it is on the blueprint list. If the stem asks for a childhood trauma screen example named by IC&RC, ACE is the named example — still a screen.

Putting the battery together

A coherent Domain II.A–B workflow: MI-consistent interviewing and safety sequencing → brief screen matched to the referral (AUDIT / DAST / ASSIST) → comprehensive map (ASI) when you need life-area severity → SASSI when denial or defensiveness is the clinical question → ACE when you need a structured childhood-adversity screen → then DSM criteria, toxicology, and placement (later sections). No single acronym does all of that work.