Before revision: The extrinsic incentives bias is an attributional bias according to which people attribute relatively more to "extrinsic incentives" (such as monetary reward) than to "intrinsic incentives" (such as learning a new skill) to others rather than themselves.
After revision: The extrinsic incentives bias is an attributional bias according when weighing the motives of which people attribute relatively more to "extrinsic incentives" (such as monetary reward) than to "intrinsic incentives" (such as learning a new skill) to others rather than themselves.