Tom believes he is unable to stop gambling because his friends all gamble and are a bad influence; however, he believes that barnaby isunable to stop gambling because barnaby is addicted to gambling. this is an example of
actor bias
actor-observer bias
cognitive dissonance
dissonant cognition

Actor-observer bias

Explanation:

Actor-observer bias: In social psychology, the term actor-observer bias is referred to as the tendency of a person to attribute his or her behavior or actions to the external cause whereas attributing the other person's behavior to any of the internal cause or reason.

In this case, either the actor or the observer would be the bias of the explanation provided by them. The effect of actor-observer bias will be more noticeable in the case of negative outcomes.

Example: If a person is going through any negative situation, then the person will blame the situation for the same but not oneself.

In the question above, the given statement is an example of actor-observer bias.

answer; triadic reciprocal determinism;