Synthesize motivation-extension sources for a Paper 3 claim

Psychology HL Paper 3 source booklet: The HL extension is motivation within learning and cognition. Source A graph reports debugging persistence score for speed leaderboard (39) and strategy reflection log (51) from 91 participants using platform log comparison across two class groups. Source B reports the qualitative theme "students said writing the strategy made errors feel like part of the task rather than failure" from 14 participants using reflection-log comments. Source C says platform logs show more second attempts in the strategy-log group. The claim is: "a mastery climate improves persistence in difficult learning tasks." Paper 3 Question 4 asks students to interpret at least three sources and judge how far the stated claim is valid. Select the HL extension focus, source issue, data conclusion, and synthesis limit. Then answer this in your own words: what should the student write next to make this Psychology HL Paper 3 response stronger for the exact sources? AI will analyse your source interpretation, data reasoning, extension knowledge, research-method judgement, synthesis, and expression.