Calvin is interested in measuring his school’s willingness to do volunteer work around the community. he sends out a self-report survey that asks students to directly fill out their attitudes on the topic.

The answer is explicit attitudes.

Explanation:

Explicit attudes are ideas and values that are conscious, thus they can be easily retrieved and explained. Most of these attitudes are formed through experience and interactions with other people.

Explicit attitudes are the opposite to implicit atttudes, which people tend to ignore, as they are stored in the unconscious.

answer; archaeologists;