Do Students Effectively Regulate Their Use of Self-Testing as a Function of Item Difficulty?

Retrieval practice is beneficial for both easy-to-learn and difficult-to-learn materials, but scant research has examined students' use of self-testing for items of varying difficulty. In two experiments, we investigated whether students differentially regulate their use of self-testing for easy and difficult items and assessed the effectiveness of students' self-regulated choices. Undergraduate participants learned normatively easy and normatively difficult Lithuanian-English word pair translations. After an initial study trial, participants in the self-regulated learning groups chose whether they wanted to restudy an item, take a practice test, or remove an item from further practice. Participants chose to test items repeatedly while learning but dropped both easy and difficult items after reaching a criterion of about one correct recall per item. Consequently, final test performance 2 days later was lower for difficult items versus easy items, and performance was lower in the self-regulated learning group than in an experimenter-controlled comparison group (in Experiment 1). In Experiment 2, we tested hypotheses for why participants reached a similar number of correct recalls for both easy and difficult items. Three new groups included different scaffolds aimed at minimizing potential barriers to effective regulation. These scaffolds did not change participants' learning choices, and as a result, performance on difficult items was still lower than on easy items. Importantly, participants planned to continue practicing items beyond one correct recall and believed that an optimal student should practice difficult items more than easy items, but they did not execute this plan during the learning task.