# Grasping affordance judgments depend on the object emotional value

## TL;DR

Emotional value of objects influences how people judge the best way to grasp them, suggesting emotions affect affordance perception.

## Contribution

The study reveals a novel link between object emotional value and affordance judgments, particularly favoring precision grips for unpleasant objects.

## Key findings

- Unpleasant objects were judged more suitable for precision grips compared to pleasant and neutral objects.
- Smaller object size increased the likelihood of precision grip judgments across all emotional categories.
- Emotional value modulates affordance judgments to favor careful manipulation of aversive stimuli.

## Abstract

The concept of affordance refers to the opportunities for action provided by the environment, often conveyed through visual information. It has been applied to explain visuomotor processing and movement planning. As emotion modulates both visual perception and the motor system, it is reasonable to ask whether emotion can influence affordance judgments. If present, this relationship can have important ontological implications for affordances. Thus, we investigated whether the emotional value of manipulable objects affected the judgment of the appropriate grasping that could be used to interact with them (i.e., their affordance).

Volunteers were instructed to use a numerical scale to report their judgment on how an observed object should be grasped. We compared these judgments across emotional categories of objects (pleasant, unpleasant and neutral), while also considering the expected effect of object size.

We found that unpleasant objects were rated as more appropriately graspable by a precision grip than pleasant and neutral objects. Simultaneously, smaller object size also favored this judgment. This effect was seen in all emotional categories examined in equal magnitude.

Our findings suggest that the emotional value of objects modulates affordance judgments in a way that favors careful manipulation and minimal physical contact with aversive stimuli. Finally, we discuss how this affective aspect of our experience of objects overlaps with what affordances are conceptualized to be, calling for further reexamination of the relationship between affordances and emotions.