The paired t-test
a. is used for randomized groups designs
b. is less powerful than the randomized t-test
c. is used to analyze within-subjects designs
d. tests differences between pairs of participants
e. requires that two t-tests be conducted
C
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Which of the following statements about epigenetics is true?
A. Epigenetic changes are only one of many ways that experience can modify DNA expression. B. Epigenetic findings are rejected by most developmental scientists because they contrast with traditional views of heredity and environment. C. Epigenetics has proven that there is no biological mechanism through which experiences can affect gene expression. D. Through over a century of research, epigenetics has contributed substantially to the body of developmental knowledge.
Consider this: It is the early 20th century and you are Freud's personal assistant. As you listen to him speak, you can anticipate what he is about to say. One time, Freud is saying, "Anxiety, fear, and psychological problems are caused by ..." and he pauses as he thinks. You suddenly say to him what would ultimately become a key concept in psychoanalytic thought. What did you say?
A. "... unfulfilled human potential!" B. "... an imbalance in brain chemicals like serotonin!" C. "... unconscious conflicts and feelings!" D. "... excessive rewards and punishments!"
_____ is a neurological disorder affecting muscle control that can be caused by severe anoxia
Fill in the blank(s) with correct word
In the development of autism spectrum disorder, environmental factors are likely to interact with genetics, especially ____.?
a. ?during sensitive periods of brain development b. ?when the mother consumes alcohol during pregnancy c. ?for parents who are known carriers of genetic disorders d. ?at the time of conception