This research program consisted of three complementary studies. The overall focus of this research was to examine the influence of a number of cognitive risk factors on depression in females. The first two studies informed the third study by, firstly, assessing the appropriateness of online data collection (Study 1), and secondly by clarifying the factor structures of two pivotal measures to be utilised in this research (Study 2). Having established the methodological and psychometric appropriateness of the variables of interest, Study 3 was then able to investigate the individual and combined influence of a number of cognitive variables on depression, specifically in females..