Psychological Assessment and Diagnosis Flashcards

A psychologist is conducting an assessment with a client who recently immigrated to Australia. The client's cultural background has different expressions of emotional distress compared to Western norms. To ensure a culturally competent diagnosis, which of the following is the MOST crucial initial step according to the DSM-5-TR framework?

Answer: Utilising the Cultural Formulation Interview (CFI) to understand the client's conceptualisation of their problem.

The DSM-5-TR includes the Cultural Formulation Interview (CFI) specifically to help clinicians gather and organize culturally-relevant clinical information. [7, 8] It is designed to understand the client's perspective on their illness, their cultural identity, and social context, which is a critical first step before applying diagnostic criteria. [11] Administering a standard test may not be culturally appropriate, assuming universality is a common pitfall, and while referral might be an option later, the psychologist's primary responsibility is to first attempt a culturally informed assessment.

A psychologist is choosing an assessment tool to measure anxiety symptoms. They find a scale with high internal consistency (Cronbach's alpha = .92) and high test-retest reliability (r = .89). However, the scale primarily includes items related to somatic symptoms (e.g., racing heart, sweating) and very few items related to cognitive symptoms (e.g., worry, rumination). Which psychometric property is MOST likely compromised?

Answer: Content validity

Content validity refers to the degree to which an assessment tool's items adequately represent all aspects of the construct being measured. [16] In this case, the scale is meant to measure anxiety but under-represents the cognitive domain of the construct, thus compromising its content validity. The high reliability scores (internal consistency, test-retest) indicate that the test measures *something* consistently, but not necessarily the full breadth of anxiety.

During a diagnostic assessment for a client presenting with low mood, fatigue, and anhedonia, a psychologist must first rule out other potential causes before assigning a diagnosis of Major Depressive Disorder. According to the principles of differential diagnosis, which of the following should be systematically ruled out first?

Answer: Symptoms attributable to a general medical condition or substance use

The process of differential diagnosis is a systematic method to distinguish a particular condition from others with similar symptoms. [1, 3] A critical initial step is to rule out whether the symptoms are a direct physiological consequence of a general medical condition (e.g., hypothyroidism, anemia) or the effects of a substance/medication. [1] Only after these have been excluded should the psychologist proceed to differentiate between various primary mental health disorders like Adjustment Disorder or Persistent Depressive Disorder. [2]

Which of the following statements most accurately reflects the ethical obligations of a psychologist in Australia regarding the use of psychological assessment tools, according to the Psychology Board of Australia and the APS Code of Ethics?

Answer: Psychologists must ensure the chosen assessment tools are valid for the purpose they are used and appropriate for the client's cultural and linguistic background.

The APS Code of Ethics, which informs the Psychology Board of Australia's standards, requires psychologists to practice within their competence and use procedures and tests that are valid and reliable. [12, 6] This includes considering the cultural and linguistic appropriateness of assessment methods and interpreting results with this awareness. [6] While using Australian-normed tests is good practice, it is not an absolute requirement, and other valid tools may be used. Informal training is insufficient, and record-keeping guidelines require secure storage of data, not immediate destruction.

A client presents with symptoms of intense fear of social situations, avoidance of public speaking, and significant worry about being judged negatively. These symptoms overlap between Social Anxiety Disorder and Agoraphobia. To make an accurate differential diagnosis, the psychologist should primarily focus on determining:

Answer: The core fear underlying the avoidance behaviour.

Differential diagnosis involves distinguishing between disorders with overlapping symptoms by identifying critical differences. [3] In differentiating Social Anxiety Disorder from Agoraphobia, the key is the client's core fear. For Social Anxiety Disorder, the fear is of negative evaluation or scrutiny by others. For Agoraphobia, the fear is of situations where escape might be difficult or help unavailable if panic-like symptoms occur. While panic attacks can occur in both, and duration is relevant for any diagnosis, the *reason* for the fear and avoidance is the primary distinguishing feature.

The DSM-5-TR and the ICD-11 are the two major diagnostic classification systems used by psychologists. A key difference in their approach to personality disorders is that:

Answer: The ICD-11 primarily uses a dimensional approach focusing on severity and trait domains, moving away from rigid categories.

A significant difference between the two systems is their approach to personality disorders. The ICD-11 has moved away from the traditional categorical model (e.g., Borderline, Antisocial as distinct types) and adopted a primary dimensional approach. Diagnosis is based on the severity of personality disturbance (mild, moderate, severe) and the characterization of prominent pathological trait domains (e.g., negative affectivity, disinhibition, dissociality). [26] The DSM-5-TR retains the 10 categorical diagnoses while also including an alternative dimensional model in Section III for further study.