Behavioral geneticists are finding that within a group of people, about _______________ of the variation in personality traits such as happiness is attributable to genetic differences

Based on the results of the National Comorbidity Survey Replication (NCS-R) Study, which disorder has the highest lifetime prevalence in the United States?

a. schizophrenia b. major depression c. bipolar mood disorder d. obsessive-compulsive disorder

According to recent research conducted at Carnegie Mellon University in Pittsburgh, what happens to the brain when we attempt to multitask?

a. Blood flow to the brain increases b. Different parts of the brain become more efficient c. Brain activity decreases d. Brain activity doubles