Interleaving

Interleaving is a learning and practice strategy that involves alternating between different topics, skills, or problem types within a single study session. Unlike blocking, where one topic is mastered before moving to the next, interleaving encourages switching tasks, which has been shown to enhance discriminatory learning and improve long-term retention.

The concept of interleaving has roots in cognitive psychology and educational theory. It is based on the idea that mixing diverse material promotes better understanding and the ability to distinguish between different concepts, as learners are forced to adapt to varying contexts and apply appropriate strategies for each type of problem. This approach can promote more flexible and durable learning, as opposed to rote memorization or repetitive practice on a single type of task.

Research evidence supports the benefits of interleaving in various domains such as mathematics, sports, and language learning. For example, a study published in the Journal of Experimental Psychology found that students who practiced multiple types of math problems in an interleaved fashion performed better on later assessments than those who practiced problems in blocks. Similarly, athletes improve skill retention and adaptability by alternating drills rather than repeating the same motion extensively.

Despite its advantages, interleaving can sometimes feel more challenging or slower than traditional practice methods, which may lead to initial frustration. However, when incorporated consistently, it can foster deeper learning, better problem-solving skills, and improved transfer of knowledge to novel situations.

In summary, interleaving is a proven, evidence-based learning technique that promotes better understanding and retention by intermixing different topics or skills during practice sessions. Its application spans various educational and training contexts, offering a strategic approach to enhancing learning outcomes.