Individuals higher in social anxiety report more impaired friendship quality, which past research suggests may stem from constrained warmth. We examined three motivations for constrained warmth in friendships and determined how these motivations related to social anxiety and friendship impairment. To do so, we assessed the psychometric properties of the Favor Scale (FS), which measures an individual's response to friendly giving. Results indicated that the FS has three subscales: negative reactions to favors (NEG), positive reactions to favors (POS), and expectation of tit-for-tat behavior (E-TFT). Structural equation modeling demonstrated that social anxiety related directly to NEG, and indirectly to POS and E-TFT through NEG. POS related directly to friendship quality, indicating that friendships may be impaired in social anxiety disorder due to the cumulative effects of responding negatively to friendly behavior.
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