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Serial pattern learning was investigated in a variation of the task introduced by Nissen and Bullemer (1987). We presented an asterisk at 1 of 4 spatial locations on each trial, and Ss either responded with a keypress or observed the event. The first 4 blocks contained 10 repetitions of a 10- or 16-element pattern, and the 5th block contained a random(More)
Research on alcohol amnesia has focused on memory processes that are disrupted during intoxication. The present experiment examined the possibility that certain memory processes might be resistant to the amnesic effects of alcohol. Intoxicated and sober subjects studied a list of 29 words. They were then given one of three different retention tests: free(More)
Nonverbal serial pattern learning in patients with traumatic brain injury was examined using a serial reaction time task developed by Nissen and Bullemer (1987). During four blocks of pattern acquisition trials, subjects responded to asterisks appearing in repetitions of a 10-element spatial sequence. An indirect measure of pattern learning was obtained by(More)
The sustained-attention performance of patients with mild closed-head injury (CHI) was examined within one month of injury using a high-event rate, digit-discrimination vigilance task with two levels of stimulus degradation (undegraded, highly degraded). Under undegraded stimulus conditions, vigilance performance for mild CHI subjects, uninjured(More)
In this study, we investigated the impact of age and task context on Stroop task performance, using error scores, response latencies, and process dissociation estimates (e.g., Lindsay & Jacoby, 1994). Across three experiments, the findings showed that although older adults were able to evaluate Stroop task demands and modify their representations of task(More)
This study examined the influence of aging on illusory correlation in judgments of co-occurrence. Older and younger Ss judged the probability of co-occurrence for events associated with preexisting expectancies after receiving nonsalient or salient information about the true probabilities of co-occurrence of the events. Results showed that when current(More)
Age differences in accuracy were investigated by having older (M = 68.6 years) and younger (M = 21.5 years) adults make confidence judgments about the correctness of their responses to two sets of general knowledge items. For one set, prior to making their confidence judgments, subjects made mental strategy judgements indicating how they had selected their(More)
This research follows a group of users over time (16 months) as they progress from novice towards expert in their use of Lotus 1-2-3. Quantitative and qualitative measures of performance are compared with expert users having over three years of experience. The results indicate that the motor aspects of performance are relatively stable over time, while(More)
Older adults easily learn probabilistic relationships between cues and outcomes when the predictive event is the occurrence of a cue, but have greater difficulty when the predictive event is the nonoccurrence of a cue (Mutter & Pliske, 1996; Mutter & Plumlee, 2004; Mutter & Williams, 2004). This study explored whether this age-related deficit occurs in a(More)