The increase in the average IQ of nations over the past few decades, known as the Flynn effect,
a. appears to be an artifact of measurement with inappropriate tests of intelligence.
b. seems to be a result of environmental factors such as better nutrition and better access to education.
c. has become larger in developed Western countries and has reverse in underdeveloped countries.
d. is the result of a complex combination of genetic factors.
Question 2
Research has revealed that we can reduce social desirability bias by
a. telling respondents that we will be able to detect false responses on their part.
b. avoiding forced choice responses and creating open-ended questions instead.
c. educating respondents about the possibility of such bias.
d. presenting only one side of an issue in a given question so respondents cannot focus on only the positive response.
The Greenhouse Effect
Alzheimer’s medications work by intensifying the effect of acetylcholine at the receptor.
Many diesel fuel additives increase the cetane rating which results in improved fuel economy.
IPCC Temperature Increase Predictions Relative to 1986-2005
Effect of Increasing the Investment Rate on the Steady State
Greenhouse effect.