Problem:
Very briefly explain the primary findings of the Yang et al. (2006) study on plasticity in memory in late life. Be sure to address between-subjects (separate groups) and within-subject (same people measured repeatedly) results.
Please use "Basic Forms of Cognitive Plasticity Extended Into the Oldest-Old: Retest Learning, Age, and Cognitive Functioning" (Yang et al. 2006) as reference. (ONLY).