“…If learners spend less time than needed on academic tasks, however, then increasing time spent should increase their learning. Millman, Bieger, Klag, and Pine (1983) tested the first part of this deduction by showing that when learners were already willing to persevere to the extent needed for learning lists of paired words, increasing their perseverance did not enhance their overall learning. The latter part of this deduction has also received support from both Stallings (1975), who reported that low-achieving third graders prospered more from an increase in time spent in reading and math than did higher achieving students, and Rossmiller (1982), who found that 70% of the variance in reading achievement for low-ability children can be attributed to time-on-task variables.…”