Why is random assignment used in between-subjects experimental designs?
a. to hold participant characteristics constant
b. to ensure a nonbiased sample
c. to ensure anonymity of the research participants
d. to eliminate systematic differences between the groups
d
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How can a father's habits affect the health of an unborn child during prenatal development?
A. A father's nicotine intake produces DNA changes that are passed to the fetus on chromosome 23. B. A father's use of barbiturates interacts with a mother's use of marijuana, resulting in missing chromosomes on a child's 8th pair. C. A father's use of alcohol or illegal drugs can affect his sperm, which in turn may lead to chromosomal damage that affects the fetus. D. A father's use of crack cocaine causes sperm mutations, such that two sperm are capable of fertilizing a single ovum.
You reach for a pot on the stove but it is much too hot, causing your hand to quickly withdraw from the handle. Explain how information traveled from your hand to your spinal cord.by describing the steps involved in generating and transmitting an action potential, and the steps involved in neuronal communication following the action potential
What will be an ideal response?
According to Kohlberg, children in the ____________________ state of moral development base their moral decisions on abstract principles that may even conflict with accepted societal standards
Fill in the blank(s) with correct word
If a researcher sends a survey to each of the representatives on the US House of Representative's Ways and Means Committee about desirable changes in budgetary practices, the researcher is using a _____________ sampling technique
a. Random b. Haphazard c. Purposive d. Cluster