Which of the following statements is not true regarding the blood brain barrier?
a) The blood brain barrier is composed of two layers of cells that limit the flow of substances between the blood and neural tissue.
b) The blood brain barrier is not equally effective everywhere in the brain.
c) Many drugs that can be administered orally or intravenously do not cross the blood brain barrier.
d) As a general rule, if a substance is not soluble in fat, it will cross the blood brain barrier.
Answer: D
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Karen's first psychology exam score is –1 standard deviation from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5 . Karen's percentile rank would be approximately:
a. 16%. b. 54%. c. 70%. d. none of the above.
According to Piaget, organisms strive to achieve a balance of organized structures that provides effective ways of interacting with the environment. This is known as
a. balancing. b. intelligence. c. equilibrium. d. consciousness.
Nowhere State University depends primarily on shoe size, rather than the SAT, for admissions purposes. Their dropout rate is rather high. Shoe size is probably not an effective predictor of success in college because it lacks ____.?
a. ?statistical reliability b. ?statistical validity c. ?motivation d. ?cultural relevance
Freud would predict a child who is overfed during the oral stage of development will develop a:
a. rationalization b. projection c. fixation d. sublimation