We examined neuroticism, but did not examine other personality constructs. For example, Eysenck (1967; 1970) proposed that low extraversion also contributes to depression and anxiety. Although this proposal has received some empirical support (e.g., Trull & Sher, 1994), other results suggest that the role of extraversion is weak when neuroticism is taken into account (e.g., Kendler, Gatz, Gardner, & Pederson, 2006).
