In the present study, two different models of task complexity; namely, limited attentional capacity model and cognition hypothesis were examined. To this end, the manipulation of cognitive task complexity along +/- single task dimension on Iranian EFL learners’ production in terms of fluency was explored. Based on the results of the writing test of TOFEL (2004), 48 learners were selected as the...

In the present study, two different models of task complexity; namely, limited attentional capacity model and cognition hypothesis were examined. To this end, the manipulation of cognitive task complexity along +/- single task dimension on Iranian EFL learners’ production in terms of fluency was explored. Based on the results of the writing test of TOFEL (2004), 48 learners were selected as the...

Limited attention may constrain animal behavior in situations in which the rate of relevant information exceeds the threshold processing capacity of the brain. In the present study, we examine why attention is limited by quantifying how attention affects the ubiquitous problem of balancing foraging and antipredator activity. We analyze how a given attentional capacity affects feeding requiremen...

stimulus selection (Broadbent, 1958; Treisman, 1960; Hoffman, 1986) and limited resources models (Kanheman, 1973) to the more current activation models (Toomin, 2000; Angelakis, Lubar & Stathopoulou, 2004). These new models do not share the traditional idea of limited attentional capacity, since attention, on working as an active and constructive mechanism, is modified with practice, so that su...

Set-specific contingent attentional capture is a particularly strong form of capture that occurs when multiple attentional sets guide visual search (e.g., "search for green letters" and "search for orange letters"). In this type of capture, a potential target that matches one attentional set (e.g. a green stimulus) impairs the ability to identify a temporally proximal target that matches anothe...

Editor: M. Mumford This study proposes a process model of the antecedents of both constructive and destructive leadership. As task difficulty increases, a leader's limited attentional resource capacity may become overwhelmed by the experience of high levels of negative emotions, resulting in selfregulation impairment and destructive leadership. When task difficulty is low, or when negative emot...

The effects of limited attentional resources and study time on explicit and implicit memory were studied using Schacter and Cooper's possible and impossible objects in their recognition and object decision paradigm. In one experiment, when attention at study was limited by a flanking digits procedure, object recognition was diminished but object decision priming for possible objects was unaffec...

An important component of routine visual behavior is the ability to find one item in a visual world filled with other, distracting items. This ability to performvisual search has been the subject of a large body of research in the past 15 years. This paper reviews the visual search literature and presents a model of human search behavior. Built upon the work of Neisser, Treisman, Julesz, and ot...