Three-year-old Dawn is given a brownie. She gets upset and says that she wants "more." So her father cuts the brownie into two pieces, and now Dawn is happier. Dawn's thinking shows that she has not yet learned to do what?

The concept of reaction range proposes that ____ establish(es) boundaries, whereas ____ determines where a person falls within that range

a. genetics; environment b. environment; genetics c. phenotype; genotype d. polygenetic inheritance; homogenetic inheritance

Which of the following statements is correct about the developmental progression of

bulimia? a. In less than half of cases, bulimia starts with a prolonged period of dieting. b. Many individuals with bulimia develop the disorder after an initial period of anorexia. c. Adolescents with bulimia are often of average weight at the start of the disorder. d. Purging generally begins a year or so before binging. e. Bulimia leads to other psychological disorders in a majority of cases.