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Adrián Muñoz-García, Matthew Cain, Jeremy Wolfe, Beatriz Gil-Gómez de Liaño; Hybrid Foraging Performance is Related to Fluid Intelligence. Journal of Vision 2018;18(10):291. doi: https://doi.org/10.1167/18.10.291.
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© ARVO (1962-2015); The Authors (2016-present)
It is known that Executive Functions (EF) are related to Fluid Intelligence (e.g. Miyake et al., 2001). However, although attentional control is a key factor in executive functions, it is not that clear whether Gf mediates in Visual Search tasks (e.g. Kane et al., 2006). Hybrid foraging search is a visual search task in which an observer looks for multiple instances of several types of targets held in memory (Wolfe, et al., 2016). Hybrid Foraging involves inhibition and attentional control as well as switching and cognitive flexibility. Thus, Hybrid Foraging would seem to put more demands on Executive Function than typical search tasks. We asked if, consequently, Hybrid Foraging performance would be related to Fluid Intelligence (Gf). Gf was estimated in eighty-three participants using the APM Raven test. They were also tested in three Hybrid Foraging tasks: Feature, Conjunction, and difficult Letter foraging. For example, in the letter task, observers collected 'b' and 'p' targets amongst 'q' and 'd' distractors. All items were in motion to prevent simple left to right, top to bottom collection. Results show that Gf is correlated with Hybrid Foraging performance: error rates were lower when APM scores were higher both for Letter (r=-.40; p< .001) and Conjunction foraging (r=-.34; p=.002), but not for Feature/easy search. Also, for Conjunction search average search RTs were faster when APM scores were higher (r=-.30; p=.007). Jointly error rate and RTs, we find that efficiency increases as Gf increases. Finally, about 'runs-switches' of target selections, although RTs are still shorter in general as Gf increases, the interactions are not significant among factors, showing that strategies of "run/switch" searches seem to be similar for all Gf levels. The present results suggest that Hybrid Foraging tasks may be an interesting paradigm to investigate the relationships between attentional capacity and executive functions.
Meeting abstract presented at VSS 2018
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