Raymond Cattell's classification of source traits was determined

Posthospitalization follow-up care and treatment in the community is known as:

a.) Acute care b.) Aftercare c.) Day care d.) Halfway care

Dr. Muhammed wants to know if people will rate facial photographs more or less favorably based on the skin color and facial features of the pictures. He digitally alters photographs and mixes the features on each picture,

so that participants in his study do not know exactly what they are looking at. Keeping participants unaware of the exact nature of the study in which they are participating helps reduce __________ effects. a. criterion b. subject-expectancy c. placebo d. observer bias