What method did researchers use so that an observer would be conscious of a visual stimulus on some trials and not conscious of the same stimulus on other trials?
a. They presented the stimulus sometimes during wakefulness and sometimes during sleep.
b. They gave the observer drugs that block activity in the visual cortex.
c. They presented masking stimuli before and after the stimulus.
d. They asked the observer sometimes to pretend not to see the stimulus.
c
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Stratified and proportionate stratified sampling both involve selecting individuals from predetermined subgroups in the population
a. True b. False Indicate whether the statement is true or false
Cystic fibrosis is a fatal lung condition that results from a recessive gene. If one parent is a healthy carrier for the condition while the other is not a carrier, what is the likely outcome for any children they might have? a. The children will be heterozygous for cystic fibrosis, and all will develop the disease
b. Fifty percent of their children will develop the disease, and the other fifty percent will be carriers. c. None of the children will have the disease, and none will be carriers. d. None of the children will have the disease, but they have a fifty percent chance of becoming carriers.
Which aspect of Type A personality is most closely correlated with increased risk for heart disease?
a. Competitiveness b. Anger and hostility c. Patience d. Worrying about time
A psychologist believes that a developing child is shaped by his or her experiences over time. Based on this statement, it can be concluded that the psychologist believes in:
A. active development. B. the organismic model of development. C. reactive development. D. Jean Jacques Rousseau's view on development.