Results

• Multiple-choice Quiz

  no difference in recall on the multiple choice quiz between the two groups on general content that was taught to both groups. The experimental group scored significantly higher than the control on questions that tested the incremental theory content.
• Motivational questionnaire 


  the participant who had been in the intervention group showed that they had changed significantly in their theory of intelligence and showed more positive mind sets. There was no change for participants in the control group.
• Teacher report

  27% of students in the intervention group were reported as showing more positive motivation compared to only 9% of the control group.
• Mathematics Grades

  participants in the intervention group gained significantly higher grades in their autumn and spring maths assessments than those in the control group. They also showed no decline in grades, which was found before the intervention and in the participants who were in the control group.