Collector feedback bias is a type of response bias that occurs in surveys or research studies when participants modify their responses based on their perception of what the researcher is looking for or what they think is socially desirable. This bias occurs when participants in a survey or research study provide responses that they believe will be viewed positively by the researcher or society as a whole. In other words, participants may provide responses that are not completely honest or accurate in order to present themselves in a more positive light. This can be a problem because it can lead to inaccurate data that does not reflect the true opinions or behaviors of the participants. Researchers can try to mitigate collector feedback bias by ensuring that the questions are phrased in an unbiased manner and by using techniques such as anonymous surveys or randomized response methods to encourage more honest responses.