The fact that researchers often unintentionally influence the outcome of their studies implies the existence of
a. experimenter bias.
b. a placebo effect.
c. sampling bias.
d. social desirability.
A
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In the United States and other developed countries, mental disorders are the ___leading cause of disease-related disability and mortality
a. 2nd b. 5th c. 10th d. 30th
An infant watches a toy car go behind a screen presumably hiding a block. When the car quickly emerges on the other side, the child stares. This result implies that infants have which concept?
a. Conservation of volume b. Conservation of number c. Object permanence d. Concrete operations
Research suggests that people are most likely to have flow experiences when they
A. work at something that has no clear goal. B. relax and do something that is not very taxing. C. are in their leisure time. D. are working at their jobs.
________ established electricity as the mode of communication used by the nervous system. a. Descartes
b. Galvani and du Bois-Reymond. c. Golgi and Cajal. d. van Leeuwenhoek.