Horticultural therapy impact on people with dementia.

Background: Dementia is a progressive disease, and as the disease progresses, many families seek help through activities and therapies. In contrast to some other therapies, horticultural therapy (HT) is widely accepted by most people with dementia (PWD) because it invites them to the natural world.

Objectives: To explore whether HT emotional and communication measures (i.

Estimating the validity of the guilty knowledge test from simulated experiments: the external validity of mock crime studies.

This experiment was designed to examine the external validity of the standard mock-crime procedure used extensively to evaluate the validity of polygraph tests. The authors manipulated the type of mock-crime procedure (standard vs. a more realistic version) and the time of test (immediate vs.