Ava wants to design a study in which the causes and effects are measured at the same point in time because it is more cost-efficient. This type of study design is called
a) longitudinal.
b) correlational.
c) cross-sectional.
d) epidemiological.
c
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The relationship between cancer and stress is based on ____
a. ?the release of dopamine during times of stress which accelerates cell growth b. ?altered immunity during times of stress which means less activity toward fighting cancer cells c. ?poisons released in the body in response to stress which causes abnormal cell division d. ?the toxicity of medications often used to self-treat stress and anxiety
A histogram is like a bar graph except with a histogram the bars don't touch each other
Indicate whether the statement is true or false
In field experiments, researchers
A) make no effort to alter participants' experiences. B) use treatment conditions that already exist naturally. C) avoid confounding variables by exposing the same participants to all treatments. D) randomly assign participants to treatment conditions in natural settings.
Research on the origins of attention-deficit hyperactivity disorder (ADHD) indicates that
A) ADHD is highly heritable. B) symptoms of ADHD usually appear in infancy. C) the disorder is usually inherited from the mother's side of the family. D) a stressful home life usually causes ADHD.