Gerven, P.W.M. van

training problem condition example effect memory participant van gerven performance age group group format training format psychology sweller interaction gerven study level information training time theory digit van merrienboer memory load ficiency load theory difference instruction journal result research merrienboer skill age groups multimedia expertise attention analysis transfer score capacity design multimedia condition erasmus university effort ef ficiency adult ficient efficiency learners focus n-back task training ef ficiency accuracy hypothesis maastricht target jug netherland contrast university target process strategy practice p.w.m training efficiency schemata solution verhaeghen 87–105 basak number reaction processing expert domain n-back approach background music