Attentional adjustment in priming tasks: control strategies depend on context

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Attention Research

Background:

• Goal-directed behavior relies on attentional biasing to manage distracting information.
• Frequent reversals in target and distractor categories necessitate flexible control strategies.
• The congruency sequence effect (CSE) measures trial-to-trial modulation of distractor interference.

Purpose of the Study:

• To investigate attentional control strategies when target-distractor category assignments frequently reverse.
• To assess the impact of stimulus onset asynchrony (SOA) on control strategy selection.
• To examine the role of redundant stimulus features in modulating control strategies.

Main Methods:

• A temporal flanker task was employed with varying stimulus onset asynchrony (SOA) (1000-1200 ms).
• The study manipulated repetition versus alternation of stimulus category assignments (digits/letters) for targets and distractors.
• Experiment 2 introduced a redundant stimulus feature (color) to aid target-distractor discrimination.

Main Results:

• With longer SOAs, the CSE was confined to repetition trials, indicating reliance on stimulus category control.
• Previous findings with shorter SOAs showed CSE in both repetition and alternation trials (temporal-order control).
• Adding a redundant color feature eliminated differences in CSE patterns between repetition and alternation trials.

Conclusions:

• Control strategy selection is context-dependent, influenced by factors like SOA and stimulus features.
• Extended SOAs promote reliance on stimulus category for attentional control.
• Redundant features can facilitate control, diminishing the distinction between repetition and alternation effects.