Debbie S. Ma
California State University, Northridge
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Publication
Featured researches published by Debbie S. Ma.
Clinical Psychology Review | 2010
Jean M. Twenge; Brittany Gentile; C. Nathan DeWall; Debbie S. Ma; Katharine Lacefield; David R. Schurtz
Two cross-temporal meta-analyses find large generational increases in psychopathology among American college students (N=63,706) between 1938 and 2007 on the MMPI and MMPI-2 and high school students (N=13,870) between 1951 and 2002 on the MMPI-A. The current generation of young people scores about a standard deviation higher (average d=1.05) on the clinical scales, including Pd (Psychopathic Deviation), Pa (Paranoia), Ma (Hypomania), and D (Depression). Five times as many now score above common cutoffs for psychopathology, including up to 40% on Ma. The birth cohort effects are still large and significant after controlling for the L and K validity scales, suggesting that the changes are not caused by response bias. The results best fit a model citing cultural shifts toward extrinsic goals, such as materialism and status and away from intrinsic goals, such as community, meaning in life, and affiliation.
Philosophical Psychology | 2018
Debbie S. Ma; Clennie Webster; Nanae Tachibe; Robert Gressis
Abstract This study tests the hypothesis that the perception of philosophy as a male-oriented discipline contributes to the pronounced gender disparity within the field. To assess the hypothesis, we determined the extent to which individuals view philosophy as masculine, and whether individual differences in this correspond with greater identification with philosophy. We also tested whether identification with philosophy correlated to interest in it. We discovered, first, that the more women view philosophy as masculine, the less they identify with it, and second, that the less women identify with philosophy, the less they want to major in it. Interestingly, this result does not hold for men—their viewing philosophy as masculine does not correspond to their identification with it, nor does it correlate with their likelihood of majoring in it. We also discovered that the typical student does not have a preconceived notion of philosophy as masculine; this suggests that they come to view philosophy as masculine the more they do it, which in turn supports the possibility that teaching the discipline differently may prevent students from conceiving of philosophy as masculine, thus allowing a path to reducing the gender disparity.
Behavior Research Methods | 2015
Debbie S. Ma; Joshua Correll; Bernd Wittenbrink
Journal of Experimental Social Psychology | 2011
Debbie S. Ma; Joshua Correll
Social and Personality Psychology Compass | 2014
Joshua Correll; Sean M. Hudson; Steffanie Guillermo; Debbie S. Ma
Basic and Applied Social Psychology | 2013
Debbie S. Ma; Joshua Correll; Bernd Wittenbrink; Yoav Bar-Anan; N. Sriram; Brian A. Nosek
Journal of Applied Social Psychology | 2013
Thierry Devos; Debbie S. Ma
Journal of Experimental Social Psychology | 2011
Joshua Correll; Caroline Lemoine; Debbie S. Ma
Journal of Social Issues | 2017
Kendra Scott; Debbie S. Ma; Melody S. Sadler; Joshua Correll
Analyses of Social Issues and Public Policy | 2014
Debbie S. Ma; Thierry Devos