Whiteside and Lynam (2001) conducted their parsing of the construct using a comprehensive model of personality, the five factor model (FFM), to provide a framework for understanding different impulsivity-like constructs. The FFM includes five broad dimensions; neuroticism, extraversion, agreeableness, conscientiousness, and openness to experience (Costa & McCrae, 1992; Digman, 1990; Goldberg, 1990). In some versions of the model, each broad dimension can be understood to describe relations among multiple distinct, but related, lower level constructs described as facets (such as anxiety, depression, and vulnerability as facets of neuroticism: Costa & McCrae, 1995).
