Dissociating attentional capture and attentional ...

3 downloads 0 Views 377KB Size Report
Capture by D2 was inferred from engagement to relevant-color D2 or D2+1 (relative to irrelevant color). Results: 1. A relevant-color D1 produced an Attentional ...
Dissociating attentional capture and attentional engagement: an attentional blink study Background

Alon Zivony ▪ Dominique Lamy ▪ Tel Aviv University

Experiment 1 (N=14)

Experiment 2 (N=12)

Conclusions

Research question Attentional selection is a multi-staged process: 1) Attentional capture (shifting of attention) 2) Attentional engagement (extracting information)

We dissociated between attentional capture and attentional engagement, for both spatial and non-spatial attention: The attentional blink disrupted attentional engagement, but not attentional capture.

Although theoretically different, these stages often remain undistinguished in practice. Can attentional capture and attentional engagement be dissociated?

Does it affect attentional capture (Di Lollo et al., 2005) or delay attentional engagement (Nieuwenstein, 2006)?

R Irrelevant-color D2

D2

Engagement to D2+1

Engagement to D2 D2 compatibility

Accuracy

Attentional Blink

Relevant-color D2

D2+1 intrusions

D2

Results: 1. A relevant-color D1 produced an Attentional Blink. 2. A relevant-color D2 captured attention. 3. During the AB, engagement was delayed.

R Irrelevant-color D2

Attentional Blink

References Di Lollo, V., Kawahara, J.I., Ghorashi, S.S., & Enns, J.T. (2005). The attentional blink: Resource depletion or temporary loss of control? Psychological research, 69(3), 191-200. Folk, C. L., Leber, A. B., & Egeth, H. E. (2008). Top-down control settings and the attentional blink: Evidence for nonspatial contingent capture. Visual Cognition, 16, 616-642. Nieuwenstein, M.R. (2006). Top-down controlled, delayed selection in the attentional blink. Journal of Experimental Psychology: Human Perception and Performance, 32(4), 973.

Relevant-color D2

No D2

Capture by D2

Engagement to D2 Location benefit

The attentional blink disrupts attentional selection.

Results: 1. A relevant-color D1 produced an Attentional Blink. 2. A relevant-color D2 produced spatial capture. 3. During the AB, engagement was delayed. 4. During the AB, spatial capture was unaffected.

D2 intrusions

The attentional blink also occurs when the first target is replaced by a distractor that matches the target defining feature (Folk et al., 2008).

Measures: - Attentional blink by D1: target accuracy for D1-target lag1 vs. lag8. - Engagement to D2: % of D2 intrusion errors. - Attentional capture by D2: spatial cueing effect (same vs. different from target).

Accuracy

The attentional blink When two target appear in close temporal proximity, the second target is often missed.

Measures: - Attentional blink by D1: target accuracy for relevant vs. irrelevant D1. - Engagement to D2: D2-target compatibility effects. - Engagement to D2+1: % of D2+1 intrusions errors (reporting D2+1 as the target). - Capture by D2 was inferred from engagement to relevant-color D2 or D2+1 (relative to irrelevant color).

These results support the Delayed Engagement Account of the Attentional Blink (Nieuwenstein, 2006) over models that emphasize disruption of attentional control (Di Lollo et al., 2005).