Running after two hares in visual working memory: Exploring retrospective attention to multiple items using...

Area of Science:

• Cognitive Psychology
• Neuroscience

Background:

• Multi-item retro-cueing effects demonstrate enhanced working memory for cued items after stimulus offset.
• Inconsistent findings and boundary conditions suggest underlying methodological issues or alternative strategies.

Purpose of the Study:

• To investigate if a single-item focus strategy explains inconsistent multi-item retro-cueing effects.
• To determine if explicit instructions to attend all cued items can elicit robust multi-item retro-cueing effects.

Main Methods:

• Monte Carlo simulation to model single-item focus strategy.
• Two experiments with explicit instructions to attend all cued items.
• Eye-tracking in Study 2B to verify gaze fixation on multiple cued locations.

Main Results:

• Simulation indicated that a single-item focus strategy can produce apparent multi-item effects.
• Explicit instructions to attend all cued items resulted in robust multi-item retro-cueing effects.
• Eye-tracking confirmed participants fixated on multiple cued locations.

Conclusions:

• Inconsistent retro-cueing effects may stem from participants' single-item focusing strategies.
• Explicitly directing attention to all cued items ensures genuine multi-item working memory enhancement.
• Methodological improvements are needed to differentiate between single-item and genuine multi-item attention in working memory research.