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Articles 1 - 4 of 4
Full-Text Articles in Cognition and Perception
Stimulus–Response Congruency Effects Depend On Quality Of Perceptual Evidence: A Diffusion Model Account, Blaine Tomkins
Stimulus–Response Congruency Effects Depend On Quality Of Perceptual Evidence: A Diffusion Model Account, Blaine Tomkins
Psychology Faculty Publications
Individuals often need to make quick decisions based on incomplete or “noisy” information. This requires the coordination of attentional, perceptual, cognitive, and behavioral mechanisms. This poses a challenge for isolating the unique effects of each subprocess from behavioral data, which reflect the summation of all subprocesses combined. Sequential sampling models offer a more detailed examination of behavioral data, enabling us to separate decisional and non-decisional processes at play in a task. Participants were required to identify briefly presented shapes while perceptual (duration, size, location) and response features (location-congruent/-incongruent/-neutral) of the task were manipulated. The diffusion model (Ratcliff, 1978) was used …
Does Optic Flow Provide Information About Actions?, Hannah Masoner
Does Optic Flow Provide Information About Actions?, Hannah Masoner
Dissertations
Optic flow, the pattern of light generated in the visual field by motion of objects and the observer’s body, serves as information that underwrites perception of events, actions and affordances. This visual pattern informs the observer about their own actions in relation to their surroundings, as well as those of others. This study explored the limits of action detection for others as well as the role of optic flow. First-person videos were created using camera recordings of the actor’s perspective as they performed various movements (jumping jacks, jumping, squatting, sitting, etc.). In three experiments participants attempted to detect the action …
Difficult Turned Easy: Suggestion Renders A Challenging Visual Task Simple, Mathieu Landry, Jason Da Silva Castanheira, Jérôme Sackur, Amir Raz
Difficult Turned Easy: Suggestion Renders A Challenging Visual Task Simple, Mathieu Landry, Jason Da Silva Castanheira, Jérôme Sackur, Amir Raz
Psychology Faculty Articles and Research
Suggestions can cause some individuals to miss or disregard existing visual stimuli, but can they infuse sensory input with nonexistent information? Although several prominent theories of hypnotic suggestion propose that mental imagery can change our perceptual experience, data to support this stance remain sparse. The present study addressed this lacuna, showing how suggesting the presence of physically absent, yet critical, visual information transforms an otherwise difficult task into an easy one. Here, we show how adult participants who are highly susceptible to hypnotic suggestion successfully hallucinated visual occluders on top of moving objects. Our findings support the idea that, at …
Perceptions Of Power In Conflict Situations, Samuel B. Bacharach, H. Andrew Michener, Edward J. Lawler
Perceptions Of Power In Conflict Situations, Samuel B. Bacharach, H. Andrew Michener, Edward J. Lawler
Edward J Lawler
Subjects rendered judgments regarding the power of the participants in a series of conflictual circumstances where an adversary threatened a target. These situations manipulated four independent variables: (a) the adversary's capacity to damage the target's interests, (b) the adversary's probability of actually attacking, (c) the target's ability to block the impending attack, and (d) the target's capacity to retaliate. Results showed that all of the independent variables affected the subjects' judgments of the adversary's power, while three of them (damage, blockage, and retaliation) affected judgments of the target's power. Differences in the predictive equations for judgments of adversary power and …