Several studies on scientific replication and meta-analytic approaches have illustrated the issue of low reproducibility or low effect size in psychology and related fields. Herein, the author described not only the problems generally underlying fields (e.g., questionable research practices and misconduct) but also problems specific to cognitive psychology. Reproducibility or effect size of experimental studies has gathered little attention from researchers in cognitive psychology. In addition, the lack of cognitive studies on researchers in cognitive psychology is related to the disregard for motivational factors on the reproduction/replication problems. Based on the understanding of these issues, the author discusses how future cognitive psychology can overcome them.
