What percentage of people have experienced shyness at some point?  a. 10% b. 25% c. 50% d. 80%

Roughly, what percentage of the population meet the diagnostic criteria for a specific phobia?Question 9Select one:a.<5%b.10%c.25%d.Most people will meet the criteria at some point in their lives.

Shy people speak less; ________ they speak a lot when they become friends. a. Nor b. So c. Yet d. For

Developmental psychology researchers have shown a genetic influence of shyness in infants where infants who were adopted were more likely to be rated as shy at 2 years of age if their biological mothers rated themselves as also being shy (Daniels & Plomin, 1985). A researcher wanted to find out if this finding extended to shyness in identical twins. The researcher recruited a sample of 35 pairs of infants who were identical twins. The researcher asked the infants’ primary caregiver to rate each infant’s level of shyness and compared the shyness level between each identical twin to see if there was a mean difference in shyness between the pairs of identical twins.Daniels, D., & Plomin, R. (1985). Origins of individual differences in infant shyness. Developmental Psychology, 21, 118–121.If μ1 and μ2 represent the shyness rating of the first-born twin and second-born twin, respectively, and let μd be the mean of the differences in the shyness rating (shyness rating of first born − shyness rating of second born) of all identical twins.Which of the following are the appropriate null and alternative hypotheses?H0: μd = 0Ha: μd > 0H0: μd = 0Ha: μd ≠ 0H0: μd ≠ 0Ha: μd = 0H0: μ1 − μ2 = 0Ha: μ1 − μ2 ≠ 0

Before doing an experiment you give people a shyness questionnaire, find pairs of people who have a similar score on it, then give one person in that pair a shyness treatment and the other one a control treatment. This is to reduce …Question 8Answera.Systematic errorb.Participant biasc.Random errord.Experimenter bias

What percent of individuals who have any mental disorder also have a co-occurring substance use disorder?10%25%33%50–70%