Both target detection and response contribute to the attentional boost effect

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Attention

Background:

• The attentional boost effect (ABE) enhances processing of concurrently presented images when targets are detected in a rapid serial visual presentation (RSVP) stream.
• Existing theories primarily focus on target detection's role in ABE, leaving the contribution of response processes unclear.

Purpose of the Study:

• To investigate whether the ABE originates from target detection or response requirements.
• To determine how response requirements influence the ABE and subsequent memory encoding.

Main Methods:

• Participants searched for the letter 'T' in an RSVP stream while encoding objects.
• Experimental conditions varied response requirements: responding only to 'T', responding to all non-'T' letters, or responding to both 'T' and non-'T' letters.
• Memory for target- and non-target-paired objects was assessed.

Main Results:

• An ABE was observed when participants responded to the target 'T'.
• No ABE was found when participants responded to non-target letters.
• Differentiating responses to targets and non-targets improved memory for target-paired objects.

Conclusions:

• Both target detection and response requirements significantly modulate the attentional boost effect.
• Response differentiation is crucial for enhancing memory for objects associated with detected targets.