Clinical Assessment and Diagnosis
What to know
Clinical assessment in counseling psychology rests on psychometric literacy: reliability (internal consistency, test-retest, inter-rater), validity (content, criterion, construct), and the standard error of measurement. Candidates should know the DSM-5-TR and ICD-11 organizing logic, including the shift from multiaxial diagnosis to separate notation of psychosocial stressors (Z codes) and disability. Know how to distinguish a syndrome from a rule-out, how cultural formulation (the Cultural Formulation Interview) modifies diagnosis, and how differential diagnosis works for overlapping presentations such as bipolar II versus recurrent major depression, or OCD versus generalized anxiety.
Traps
Questions often test whether you select the most specific diagnosis rather than the most salient symptom. Watch for duration and impairment criteria (e.g., a 10-day hypomanic episode that does not meet the 4-day threshold). Beware of confusing screening instruments with diagnostic tools, and of treating a high score as a diagnosis. Another trap: assuming a medical condition is "psychological" when the stem includes red flags (new-onset symptoms in older adults, focal neurologic signs, weight loss).
Rule of thumb
Diagnose the pattern, not the single symptom: ask whether criteria are met in full, whether another condition better explains the picture, and whether a substance or medical condition is etiologic. When two diagnoses are plausible, the one that accounts for more of the presentation and has clearer treatment implications generally leads.
Worked example
A 26-year-old reports 3 days of elevated mood, decreased need for sleep, and increased goal-directed activity after an SSRI was started. This does not meet the 4-day hypomania threshold and is substance/medication-induced; document it as such rather than bipolar II.