Foraging with Anne Treisman: Features versus conjunctions, patch leaving and memory for foraged locations
| Autor: | Árni Kristjánsson, Tómas Kristjánsson, Andri S. Bjornsson |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Linguistics and Language Adolescent Computer science Decision Making Foraging Marginal value theorem Experimental and Cognitive Psychology 050105 experimental psychology Language and Linguistics Optimal foraging theory Young Adult 03 medical and health sciences 0302 clinical medicine Memory Humans Visual attention Attention 0501 psychology and cognitive sciences Orientation Spatial 05 social sciences Middle Aged Models Theoretical Visual search tasks Sensory Systems Conjunction (grammar) Task (computing) Feature (computer vision) Exploratory Behavior Visual Perception Female 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Attention, Perception, & Psychophysics. 82:818-831 |
| ISSN: | 1943-393X 1943-3921 |
| Popis: | Foraging tasks are increasingly used to investigate human visual attention as they may provide a more dynamic and multifaceted picture of attentional orienting than more traditionally used visual search tasks. A common way of assessing foraging performance involves measuring when foragers decide to move to a new "patch" with a higher yield. We assessed this using Anne Treisman's famous feature versus conjunction manipulation in an iPad foraging task. We measured how well patch leaving accorded with the predictions of the marginal value theorem that describes how foragers may optimize their foraging by leaving a patch once the average yield within a patch drops below the average yield in the whole environment. Human foraging in our paradigm deviated from the predictions of such optimal foraging conceptions, and our participants kept on foraging within the same patch for longer than expected. Patch leaving and intertarget times differed surprisingly little between feature and conjunction foraging, especially in light of the dramatic differences typically seen between performance on feature and conjunction visual search tasks. Other aspects of foraging performance (run number and switch costs) differed strongly between feature and conjunction foraging, however. We conclude that human foraging is probably influenced by too many factors to be captured with a relatively simple mathematical model. |
| Databáze: | OpenAIRE |
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