Sample interview questions: How do you collect and analyze data to evaluate the effectiveness of behavior interventions?
Sample answer:
Data Collection Methods
- Direct Observation: Observe target behaviors directly and record their frequency, duration, intensity, and antecedents/consequences.
- Self-Report Measures: Use surveys, interviews, or diaries to collect information from individuals about their behavior.
- Physiological Measures: Utilize devices (e.g., accelerometers, heart rate monitors) to measure physiological responses associated with behaviors.
- Environmental Analysis: Conduct observations or interviews to assess the physical and social environment for potential influencers of behavior.
Data Analysis Techniques
- Descriptive Statistics: Calculate measures of central tendency (e.g., mean, median) and variability (e.g., standard deviation) to describe behavior patterns.
- Hypothesis Testing: Use statistical tests (e.g., t-tests, ANOVA) to determine if there are significant differences in behavior between experimental and control groups or before and after intervention.
- Time Series Analysis: Examine behavior patterns over time to identify trends and effects of intervention.
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