I am examining issues surrounding transparency and replicability in psychological research, with an emphasis on study quality appraisal, i.e., ways of assessing the extent to which a study took appropriate measures to minimize bias and error. To that aim, I have developed the first quality appraisal tool for survey studies in psychology: A checklist to assess the quality of survey studies in psychology - ScienceDirect. The checklist can be used to evaluate, design, and teach survey research.

In 2018, I published an integrated theory (i.e., a synthesis of multiple theoretical perspectives that are complimentary) to explain and predict young peoples’ condom use in Sub-Saharan Africa (SSA).



Because the study of condom use and the development of condom promotion interventions in SSA has been based on single theories (typically social-cognitive) and single perspectives (typically individual reasoned action approaches). However, young people in SSA engage in inconsistent or low condom use, despite having received messages promoting condom use from a very early age. The limited success of condom (and other) health promotion interventions may be, at least partially, attributed to the use of single theoretical perspectives framing these interventions. Single theories are hampered by weaknesses, such as the intention-behaviour gap, individualistic bias, and emphasis on rational decision making. The development of an integrated condom use model attempts to address weaknesses associated with the use of single theories, offering a comprehensive yet parsimonious approach to the study of condom use.

This integrated theory was funded by a Social Science Meta-Analysis and Research Transparency (SSMART) grant, awarded by the University of Berkeley, California, with support from the William and Flora Hewlett Foundation.

Read more about the theory here: Theory development and here:

Nawuphi na umntu okanye iziko ukuba uzama ukundiqhatha isidima sam uya kulahlekelwa