This study was designed to examine how teacher's feedback to an individual pupil's answer was influenced by her attitude toward the pupil, i.e., teacher's perception of and preference for an individual pupil. Two primary school female teachers' feedback to pupils' answers in arithmetic lessons were videotaped and analyzed. Each teacher taught 12 hours in one series of observation. And the teachers were asked about their perception of and preference for each pupil. The analysis of relations between the teachers' feedback and their attitude showed that percentages of affirmation and/or explanations to the pupils' correct answers in easy questions varied according to how they perceived each pupil's ability, obedience, mental strength and how they liked each individual pupil. The results were discussed mainly with reference to Cooper's (1979) model for expectation communication and behavior influence.