Evidence from cross-cultural and bilingual research demonstrates that the frequency and characteristics of co-speech gestures are shaped by cultural norms and linguistic contexts.
The provided literature includes direct empirical evidence showing that co-speech gesture patterns and frequencies are influenced by cultural and linguistic contexts (such as Papers 8 and 10). The remaining papers discuss music, robotics, surgery training, animal behavior, or general speech timing without addressing cross-cultural variations in body gestures during speech. Therefore, the claim is supported by the relevant evidence.