Mischel (1972) studied delay of gratification in preschoolers: Children were offered a special reward if they could wait or a less attractive treat if they chose not to wait. A follow-up study was done years later, looking at the same children as adolescents. The researchers found an association between the waiting times of the preschoolers and parents' reports of the same children's behaviors as adolescents. Which of the following is a question one could ask to assess the construct validity of this association a. How well was delay of gratification measured?
b. Can the results be generalized to all American children?
c. Is there a third variable that explains this relationship?
d. Were the results statistically significant?

You are a member of the jury for a murder case. the prosecution has presented dna evidence linking the defendant to the crime scene. the defense claims that dna evidence using str analysis with 13 markers is not sufficient to reliably distinguish between people. what do you think? a. the defense is right. str analysis with 13 markers gives a 1 in 1 million chance of two people having the same pattern, leaving a reasonable doubt. b. str analysis is not sufficient. the defendant's entire genome should be sequenced. the prosecution will have to consult a genomic library to make sure their dna evidence is valid. c. the prosecution is right. str analysis with 13 markers gives a 1 in 10 billion or greater chance that two people will have the same pattern. this person was at the crime scene. d. dna evidence is not generally accepted by legal experts.

Using the factors of production to make one product always means that o .) a company may experience a shortage of materials o . )a nation can make more money o. ) it is possible to make too many of that product o. ) fewer resources are left to make something else

On a supply and demand graph, equilibrium is the point where the two curves meet. the supply curve begins. the supply curve ends. the demand curve ends.