Positive Impact Feedback

C.

Of the options given, the form of feedback with the greatest positive impact is specific comments on errors with suggestions on how to improve (Option C).

Option A, suggestions that focus on procedures versus the concepts, can be helpful, but they may not necessarily address the root cause of any issues that the learners are experiencing. Focusing on concepts can help learners understand the bigger picture and see how the different procedures fit into it.

Option B, measurable results from summative assessments, can be useful for evaluating learners' understanding of a topic or concept. However, these results may not provide enough information on how to improve, as they only show the final outcome.

Option D, comparing learner performance with other learners, can create competition among learners, which can be motivating for some, but demotivating for others. Additionally, this type of feedback does not necessarily provide specific feedback on areas for improvement.

Option C, specific comments on errors with suggestions on how to improve, is the most effective form of feedback as it provides specific, actionable feedback to learners. This feedback helps learners identify and correct their mistakes and improve their understanding of the topic or concept. It also demonstrates to learners that the instructor is invested in their success and is willing to provide guidance on how to improve. This type of feedback can help learners build confidence, improve their skills, and achieve their goals.