Fred Fiedler, an American scholar developed the least-preferred coworker (LPC) questionnaire. This questionnaire includes cold-warm, boring-interesting, and friendly-unfriendly, and other sets of bipolar adjectives. Respondents were asked to think of all the coworkers they had ever had and to describe that one person they least enjoyed working with by rating him or her on a scale of 1 to 8 for each of the 18 or more sets of adjectives.
The least-preferred coworker (LPC) questionnaire recognizes whether the leadership style of a person is task-oriented or relationship-oriented.
The least-preferred coworker (LPC) questionnaire needs an individual to rate her/his least-preferred co-worker with the help of a range of around 18 to 25 positive or negative (bipolar) adjectives, with ratings from one to eight. Then the LPC score is estimated by adding all the ratings. Here, a low LPC score means that the person is a task-oriented leader. On the other hand, a high LPC score suggests a relationship-oriented leader.
Generally, the sets of bipolar adjectives applied in the LPC scale as mentioned earlier can include supportive-hostile, boring-interesting, friendly-unfriendly, pleasant-unpleasant, cold-warm, and so on. The given responses are measured from 1 for the least preferred characteristic (e.g. hostile or boring), to 8 for the most preferred one (supportive or interesting).