A familiar-size Stroop effect in the absence of basic-level recognition.

Area of Science:

• Cognitive Psychology
• Visual Perception
• Neuroscience

Background:

• Humans automatically recognize objects and their typical real-world sizes upon viewing images.
• Prior research indicates differences in mid-level perceptual features between large and small objects.
• A key question is whether size information is accessed post-object identification or during the recognition process.

Purpose of the Study:

• To investigate if mid-level perceptual features can automatically trigger real-world size processing.
• To determine if size information can be accessed before basic-level object recognition.
• To explore the role of specific perceptual features in inferring object size.

Main Methods:

• Utilized an image synthesis algorithm to create 'texform' images of objects.
• Texform images preserved textural and form information but were unrecognizable.
• Conducted two experiments employing the Size-Stroop task with these synthesized stimuli.

Main Results:

• Unrecognizable texform images automatically triggered familiar size processing.
• A significant Size-Stroop effect was observed, indicating automatic size activation.
• Perceived curvature was identified as a key feature influencing real-world size inference.

Conclusions:

• Mid-level perceptual features can automatically facilitate object processing, feeding forward to higher-level properties.
• Object recognition is not a prerequisite for accessing real-world size information.
• Findings challenge sequential models of visual object processing.