His main areas of study are in abnormal, social, and personality psychology, with a particular interest in the psychology of religious and ideological belief, and the assessment and improvement of personality and performance.
Bidang kajian utamanya adalah psikologi abnormal, sosial, dan kepribadian, dengan keahlian khusus di bidang psikologi agama dan ideologi, serta penilaian dan peningkatan kepribadian dan kinerja.