Publications by authors named "Olivia Dennison"
Background: Dopaminergic activity within the dorsolateral prefrontal cortex (dlPFC) has been implicated in the control of cognitive flexibility. Much of the evidence for a causative relationship between cognitive flexibility and dopamine has come from animal studies, whilst human data have largely been correlational.
Objective/hypothesis: The current study examines whether changes in dopamine levels through tyrosine administration and suppression of dlPFC activity via cathodal tDCS could be causally related to cognitive flexibility as measured by task switching and reversal learning.
Prevalence of human immunodeficiency virus testing and associated risk factors in college students.
J Am Coll Health
September 2015
Objective: This study documents the prevalence of human immunodeficiency virus (HIV) testing in a sample of college students and examines associated demographic and behavioral characteristics.
Participants: College students aged 18 or older were randomly selected to participate in a health behavior survey at a southeastern university in September 2011.
Methods: Only sexually active students were included (N = 905).