Helping behavior in rats (Rattus norvegicus) when an escape alternative is present

Area of Science:

• Animal Behavior
• Neuroscience
• Psychology

Background:

• Prosocial behavior, or helping others, is observed in rats responding to a familiar rat's distress.
• The underlying motivations for this prosocial behavior remain unclear, particularly in adolescent rats.

Purpose of the Study:

• To investigate the motivations behind prosocial behavior in adolescent rats using an adapted experimental setup.
• To determine if the option to escape influences the rats' helping behavior.

Main Methods:

• Adolescent rats were placed in an arena with a trapped cagemate.
• An escape route to a dark compartment was provided in the experimental condition.
• A control group had the escape route closed, and distress and exploratory behaviors were measured.

Main Results:

• Rats learned to open the restrainer, but took longer when an escape route was available.
• The distress of the trapped rat did not influence helping behavior.
• Exploratory behavior in both rats correlated with faster helping.

Conclusions:

• Adolescent rats demonstrate prosocial behavior even when given an option to avoid helping.
• Positive emotional states and exploratory actions play a significant role in facilitating prosocial behavior in rats.