Which of these is likely for people with a "Duchenne" smile?
a. A habit of trying to deceive others
b. Rapid mood swings between happiness and depression
c. Long-lasting feelings of happiness and competence
d. An inferiority complex
c
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Combining the monozygotic twin and adoption studies, researchers often study identical twins raised in different families. This method helps researchers determine a. the effects of adoption on a child's gene expression
b. the effects of adoption on a child's personality. c. the effect of environment without the confound of shared genes. d. the effects of genes without the confound of shared environments.
Which of the following is most likely to be a finding from a normative investigation?
a. Shyness is a personality trait that is relatively stable over time. b. Children must have a rudimentary understanding of symbolism before they can learn to read. c. The average child can build a tower of three blocks at the age of 18 months. d. Attempts at toilet training are futile until the child has voluntary control of the necessary muscles.
Single mothers have more discipline problems with their daughters than with their sons
Indicate whether the statement is true or false
Children who tend to have much experience with death are those who live in ______.
A. North America B. South America C. drought-stricken areas D. poverty-stricken areas