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This research compared adolescent daily smokers (n=25) and nonsmokers (n=26) on different measures of impulsivity. Assessments included question-based measures of delay (DDQ) and probability (PDQ) discounting, a measure of behavioral disinhibition (go-stop task), and a self-report measure of impulsivity (Barratt Impulsiveness Scale-Adolescent). Adolescent(More)
Both humans and non-humans discount the value of rewards that are delayed or uncertain, and individuals that discount delayed rewards at a relatively high rate are considered impulsive. To investigate the neural mechanisms that mediate delay discounting, the present study examined the effects of excitotoxic lesions of the nucleus accumbens (NAC) on(More)
This research compared adolescent smokers (n=45) and nonsmokers (n=35) on ratings of certainty about receiving delayed rewards during a delay discounting procedure. Consistent with a previous finding [Patak, M., Reynolds, B., 2007. Question-based assessments of delay discounting: do respondents spontaneously incorporate uncertainty into their valuations for(More)
Impulsivity is a multifaceted construct that defines a range of maladaptive behavioral styles. The present research aimed to identify different dimensions of impulsive behavior in adolescents from a battery of laboratory behavioral assessments. In one analysis, correlations were examined between two self report and seven laboratory behavioral measures of(More)
The present study evaluated a new 30-day Web-based contingency management program for smoking abstinence with 4 daily-smoking adolescents. Participants made 3 daily video recordings of themselves giving breath carbon monoxide (CO) samples at home that were sent electronically to study personnel. Using a reversal design, participants could earn money for(More)
This research was designed to determine if, and to what extent, participants incorporate uncertainty into their valuations for delayed rewards when completing measures of delay discounting, even though uncertainty is not specified in the delay-discounting questions. Twenty-four adolescent participants completed a question-based measure of delay discounting(More)
Forty hospitalized patients with sudden hearing loss and tinnitus were compared to a control group (N = 28) of inpatients of an ear-nose-throat ward. They were similar in various background variables except for the kind of disorder itself. The main objective of our study was to test the hypothesis of stress as a predisposing risk factor in the development(More)
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