ASPD Research Methods and Evidence 2 — Questions and Answers
Question 1: Which research design is considered the gold standard for establishing causality in ASPD treatment studies?
- Cross-sectional survey
- Randomized controlled trial (RCT) (Correct answer)
- Case study analysis
- Retrospective chart review
Correct answer: Randomized controlled trial (RCT)
RCTs randomly assign participants to treatment and control conditions, minimizing confounding variables and allowing causal inferences.
Question 2: In ASPD research, what is the primary challenge with using self-report measures to assess antisocial traits?
- Self-reports are too expensive to administer
- Individuals with ASPD may intentionally deceive or minimize their behaviors (Correct answer)
- Self-reports cannot capture behavioral data
- Self-reports require specialized training to score
Correct answer: Individuals with ASPD may intentionally deceive or minimize their behaviors
Deceitfulness is a core feature of ASPD, making self-report validity particularly problematic in this population.
Question 3: A researcher studying the heritability of ASPD compares concordance rates between identical and fraternal twins. What type of study is this?
- Adoption study
- Twin study (Correct answer)
- Family pedigree study
- Genome-wide association study
Correct answer: Twin study
Twin studies compare monozygotic and dizygotic twins to estimate the genetic contribution to a trait or disorder.
Question 4: Which statistical measure is used to quantify the proportion of variance in ASPD attributable to genetic factors?
- Odds ratio
- Cohen's d
- Heritability estimate (h²) (Correct answer)
- Pearson correlation coefficient
Correct answer: Heritability estimate (h²)
Heritability estimates (h²) range from 0 to 1 and indicate the proportion of phenotypic variance explained by genetic differences.
Question 5: What is the main limitation of retrospective studies examining childhood conduct disorder as a precursor to ASPD?
- They require too many participants
- Recall bias may distort participants' accounts of past behavior (Correct answer)
- They cannot use standardized diagnostic tools
- Ethics boards rarely approve them
Correct answer: Recall bias may distort participants' accounts of past behavior
Retrospective studies rely on memory, which is subject to distortion, especially when recalling childhood conduct problems years later.
Question 6: Which approach best controls for shared environmental confounds when studying ASPD in families?
- Longitudinal cohort study
- Adoption study separating reared-apart siblings (Correct answer)
- Meta-analysis of existing studies
- Case-control study
Correct answer: Adoption study separating reared-apart siblings
Adoption studies separate genetic from environmental influences by comparing adopted children raised apart from biological relatives.
Question 7: In ASPD neuroimaging research, what does reduced amygdala volume or reactivity most commonly suggest?
- Impaired working memory
- Deficits in fear conditioning and emotional processing (Correct answer)
- Enhanced executive function
- Increased empathic response
Correct answer: Deficits in fear conditioning and emotional processing
The amygdala is central to fear learning and emotional memory; reduced function is associated with the emotional deficits seen in ASPD and psychopathy.
ASPD Research Methods and Evidence 2
Which research design is considered the gold standard for establishing causality in ASPD treatment studies?