Some traits, such as blood type, are transmitted by a single pair of genes. Other traits are determined by combinations of pairs of genes. These traits are called
a. monogenic.
b. polygenic.
c. multigenic.
d. recessive.
b
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It can be important to use a double-blind procedure in a research study in order to prevent the a. independent variable from influencing the dependent variable. b. confusion of correlation with causation
c. participants' expectations from biasing the independent variable. d. researcher's expectations from biasing the outcome.
What is the significance of the United Nations' approval of The Convention on the Rights of the Child?
a. It acknowledges the special nature of childhood. b. It enforces protection of children worldwide. c. It coordinates how children are treated worldwide. d. It creates a new definition of "childhood.".
Working memory is least crucial in:
a. Playing chess b. Performing long division c. Carrying on a conversation d. Reading from a postcard
By what age are children purposefully using smiling to communicate positive emotions?
a) 1 year b) 6 months c) 1.5 years d) 2 years