We conducted two experiments using naturalistic scene stimuli to test the resource theory and mindlessness theory of sustained attention. In experiment 1, 28 participants completed a traditional formatted vigilance task consisting of non-repeating forest or urban picture stimuli as target stimuli. Participants filled out pre- and post-task assessments of arousal and conscious thoughts. There was still a vigilance decrement, despite non-repetitive, natural target stimuli. Participants found the task demanding and were actively engaged in the task. In experiment 2, 25 participants (...) completed a Sustained Attention to Response Task using the stimuli from experiment 1. Participants performed significantly worse on this SART than either brain injury patients or controls performing equivalent numeric stimuli SARTs have in previous studies. Participants thought the task was demanding and they were actively engaged with the task. Overall, the results of both studies support a resource theory of sustained attention lapses, not a mindlessness theory. (shrink)

Lately, it seems a number of philosophical memory theories are incorporating false memory phenomena into their conceptual frameworks. At the same time, scientific research is extending its analysis of false memories to nondeclarative forms of memory. However, both sides have paid little attention to the notion of false procedural memory. Yet, from everyday experience as well as from psychological investigation, we are aware of different ways procedural memory goes wrong. Here, I characterize the conceptual foundation of false procedural memory. First, (...) I distinguish remembering-how from knowing-how by proposing that remembering-how requires the performance of an act. Accordingly, genuine remembering-how is characterized as the performance of an act for which a respective ability has been acquired that is instrumental in the execution of said act. False remembering-how is identified as a kind of error where a subject acquires the ability to perform a certain act, which is then correctly executed, but is not what the subject tried to perform. This framework of false procedural memory is delineated from notions of interference and crosstalk. A comparison with current philosophical theories of false memory and analysis showing the relevance for current psychological research and everyday life concludes the paper. (shrink)

The current investigation was conducted to elucidate whether errors of commission in the Sustained Attention to Response Task are indicators of perceptual or motor decoupling. Twenty-eight participants completed SARTs with motor and perceptual aspects of the task manipulated. The participants completed four different SART blocks whereby stimuli location uncertainty and stimuli acquisition were manipulated. In previous studies of more traditional sustained attention tasks stimuli location uncertainty reduces sustained attention performance. In the case of the SART the motor manipulation , but (...) not the perceptual manipulation significantly reduced commission errors. The results suggest that the majority of SART commission errors are likely to be indicators of motor decoupling not necessarily perceptual decoupling. (shrink)