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Full-Text Articles in Psychology
A Generative Model Of Cognitive State From Task And Eye Movements, W. Joseph Macinnes, Amelia R. Hunt, Alasdair D. F. Clarke, Michael D. Dodd
A Generative Model Of Cognitive State From Task And Eye Movements, W. Joseph Macinnes, Amelia R. Hunt, Alasdair D. F. Clarke, Michael D. Dodd
Department of Psychology: Faculty Publications
The early eye tracking studies of Yarbus provided descriptive evidence that an observer’s task influences patterns of eye movements, leading to the tantalizing prospect that an observer’s intentions could be inferred from their saccade behavior. We investigate the predictive value of task and eye movement properties by creating a computational cognitive model of saccade selection based on instructed task and internal cognitive state using a Dynamic Bayesian Network (DBN). Understanding how humans generate saccades under different conditions and cognitive sets links recent work on salience models of low-level vision with higher level cognitive goals. This model provides a Bayesian, cognitive …
Human Classifier: Observers Can Deduce Task Solely From Eye Movements, Brett Bahle, Mark Mills, Michael Dodd
Human Classifier: Observers Can Deduce Task Solely From Eye Movements, Brett Bahle, Mark Mills, Michael Dodd
Department of Psychology: Faculty Publications
Computer classifiers have been successful at classifying various tasks using eye movement statistics. However, the question of human classification of task from eye movements has rarely been studied. Across two experiments, we examined whether humans could classify task based solely on the eye movements of other individuals. In Experiment 1, human classifiers were shown one of three sets of eye movements: Fixations, which were displayed as blue circles, with larger circles meaning longer fixation durations; Scanpaths, which were displayed as yellow arrows; and Videos, in which a neon green dot moved around the screen. There was an additional Scene manipulation …
Effects Of Task And Task-Switching On Temporal Inhibition Of Return, Facilitation Of Return, And Saccadic Momentum During Scene Viewing, Mark S. Mills, Edwin S. Dalmaijer, Stefan Van Der Stigchel, Michael D. Dodd
Effects Of Task And Task-Switching On Temporal Inhibition Of Return, Facilitation Of Return, And Saccadic Momentum During Scene Viewing, Mark S. Mills, Edwin S. Dalmaijer, Stefan Van Der Stigchel, Michael D. Dodd
Department of Psychology: Faculty Publications
During scene viewing, saccades directed toward a recently fixated location tend to be delayed relative to saccades in other directions (“delay effect”), an effect attributable to inhibition-of-return (IOR) and/or saccadic momentum (SM). Previous work indicates this effect may be task-specific, suggesting that gaze control parameters are task-relevant and potentially affected by task-switching. Accordingly, the present study investigated task-set control of gaze behavior using the delay effect as a measure of task performance. The delay effect was measured as the effect of relative saccade direction on preceding fixation duration. Participants were cued on each trial to perform either a search, memory, …
The Politics Of The Face-In-The-Crowd, Mark S. Mills, Kevin B. Smith, John R. Hibbing, Michael Dodd
The Politics Of The Face-In-The-Crowd, Mark S. Mills, Kevin B. Smith, John R. Hibbing, Michael Dodd
Department of Psychology: Faculty Publications
Recent work indicates that the more conservative one is, the faster one is to fixate on negative stimuli, whereas the less conservative one is, the faster one is to fixate on positive stimuli. The present series of experiments used the face-in-the-crowd paradigm to examine whether variability in the efficiency with which positive and negative stimuli are detected underlies such speed differences. Participants searched for a discrepant facial expression (happy or angry) amid a varying number of neutral distractors (Experiments 1 and 4). A combination of response time and eye movement analyses indicated that variability in search efficiency explained speed differences …