The attentional boost effect really is a boost: evidence from a new baseline

Area of Science:

• Cognitive Psychology
• Neuroscience
• Memory Research

Background:

• The attentional boost effect describes improved memory for images encoded during an unrelated target-detection task.
• This effect may stem from general processing enhancement or distractor rejection inhibition.

Purpose of the Study:

• To differentiate between processing enhancement and distractor rejection as causes of the attentional boost effect.
• To establish a baseline for image memory encoding in dual-task scenarios.

Main Methods:

• Participants memorized faces presented in a rapid stream (500- or 100-ms duration).
• A concurrent task involved monitoring squares for target or distractor colors.
• A baseline condition presented faces without any concurrent square stimuli.

Main Results:

• Long-term memory for faces coinciding with a target square was significantly enhanced.
• Memory for faces in the target condition surpassed both baseline and distractor conditions.
• Faces presented during distractor events showed no memory advantage over baseline.

Conclusions:

• Target detection triggers a processing enhancement that boosts memory for concurrent images.
• The attentional boost effect is primarily driven by the cognitive benefits of attending to relevant stimuli.
• Behaviorally relevant events enhance memory encoding in dual-task environments.