Key research themes
1. How do sampling methods and participant selection criteria affect research validity and representativeness?
This research focus investigates the methodological foundations of participant selection in studies, emphasizing the trade-offs between sample size, representativeness, and the feasibility of conducting full population surveys (censuses). Understanding these issues is central to ensuring statistical inference accuracy, mitigating biases from nonresponse or flawed sampling frames, and enhancing the generalizability of results.
2. What factors influence individual choices in academic subject selection and their implications for educational equity?
This theme examines how students decide on academic subjects, particularly in secondary and tertiary education, exploring intrinsic motivators such as interest, self-perceived ability, and extrinsic factors including parental involvement, socioeconomic background, institutional context, and gender stereotypes. This area is pivotal for addressing disparities in subject uptake, especially in STEM fields, and for designing interventions to improve equitable access to educational and career opportunities.
3. Does topic choice impact assessment performance validity and reliability in high-stakes testing?
Investigations here assess whether allowing examinees to choose essay or test topics affects their scores and the equivalence of scores across candidates. This line of inquiry is crucial for ensuring fairness and standardization in assessments that inform high-stakes decisions, scrutinizing test validity, construct representation, and consequences for interpreting test outcomes.