The effects of early schema acquisition on mathematical problem solving.

The current paper explores the effects of providing people with schema training at the outset of learning (compared to at later stages) on mathematical word problems modeled after problems from the Graduate Record Examination. Additionally, the ratio of worked examples to problem-solving practice was manipulated. Participants were randomly assigned to one of four conditions and were tested on near and far transfer problems. Participants provided schema training at the outset of learning outperformed those provided schema training after problem-solving practice, particularly on far transfer problems. Likewise, participants provided with a higher ratio of worked examples to problem-solving practice demonstrated better performance during testing than those provided with more problem-solving practice and fewer worked examples. These findings extend the worked example effect to far transfer problems and suggest that providing schema training prior to learning solution strategies may be effective in improving mathematical problem solving.

Daily Activity Abilities in MCI, Alzheimer's Disease, and Healthy Controls.

Mild cognitive impairment (MCI) is a risk state for dementia. The present study assessed daily functioning in MCI individuals (amnestic [aMCI] and nonamnestic [naMCI]) relative to those with Alzheimer's disease (AD) and healthy controls (NC). Twenty AD participants, 14 aMCI, 12 naMCI, and 30 healthy controls were administered the Direct Assessment of Functional Status (DAFS). The AD group performed poorer than all groups on all DAFS subscales. The aMCI group performed poorer than controls on the shopping subtests, while the naMCI group performed poorer than controls on only the free recall shopping. Finally, DAFS subscales discriminated the AD and aMCI groups well, but only recognition shopping discriminated between naMCI and aMCI individuals. These findings suggest that circumscribed ADL deficits distinguish subtypes of MCI and AD.

The Effects of Declining Functional Abilities in Dementia Patients and Increases Psychological Distress on Caregiver Burden Over a One-Year Period.

The degree to which changes in caregiver burden over a one year period can be predicted by functioning of dementia patients and caregiver psychological stress was examined. The Direct Assessment of Functional Status (DAFS) was administered to 44 patients and the Caregiver Burden Inventory and the Brief Symptom Inventory were administered to their next-of-kin caregivers. All patients and caregivers were assessed at baseline and again in approximately one year with the same measures. Hierarchical regression revealed that baseline patient functioning predicted overall changes in caregiver burden, but that increases in psychological symptoms of caregivers such as depression, anxiety and hostility were the best predictors for specific types of increased caregiver burden, such as social, developmental, or physical burden. These results suggest that interventions should target reduction of particular psychological symptoms in order to reduce caregiver burden over time.