Exam 12: Ex Post Facto Research

Exhibit 12-3: In a study of the membership of the most influential business persons' organization in River City, it was found that the proportion of those who are also members of the Buffalo Honorary Club (BHC) is much higher than the portion of BHC members in the general city population.One might conclude that participation in BHC activities is a positive influence in leading people to become successful businesspersons or a number of alternative hypotheses could be suggested.Choose the correct hypothesis for each question. -Refer to Exhibit 12-3.Which is a hypothesis about another independent variable?

Ex post facto research is the only recourse when there is an

Exhibit 12-1: Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. -Refer to Exhibit 12-1.A multicultural curriculum will change children's racial attitudes.

To conclude that Variable A is a cause of Variable B, you need to establish

Exhibit 12-1: Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. -Refer to Exhibit 12-1.Persons with seasonal affective disorder will attend fewer religious services than will persons without the disorder.

You have a group of male high school math teachers with high scores on authoritarianism and you want to investigate the influence of authoritarianism on students' attitudes toward math.What kind of a comparison group would you choose to provide the most control in this study?

Discuss how the use of a factorial design could improve ex post facto research?

Exhibit 12-2: A study of inner-city adolescents found that the proportion of those who participate in athletics who have police records was much lower than that proportion for other adolescents in the same community.It might be concluded that participation in athletics helps adolescents avoid criminal activity.Many other hypotheses may also be suggested.Read the hypotheses (a-d) and choose the correct answer. -Refer to Exhibit 12-2.Which is a hypothesis of common cause?

Exhibit 12-1: Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. -Refer to Exhibit 12-1.Using a physical touch while giving feedback to mentally disabled children is more effective than verbal feedback alone.

If you have a choice between investigating the same question with ex post facto research or with experimental research choose

An investigator finds that college students who drink alcohol excessively have academic achievement that is lower than other students who do not engage in this activity.She concludes that excessive drinking of alcohol results in decreased academic achievement.Which alternative hypothesis(s) should she investigate?

A limitation of ex post facto research is that

The neighbor's dogs seem to bark only when you come home from work.A cause-effect conclusion might be spurious if

Exhibit 12-5: A researcher obtains chemistry achievement test scores from a group of high school students who have had laboratory experience and a group who have not.She recognizes the need to control for the variable intelligence in his study.Identify the type of control technique illustrated by the following procedures. -Refer to Exhibit 12-5.The effect of intelligence on the test scores is controlled with a statistical procedure.

Exhibit 12-1: Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. -Refer to Exhibit 12-1.AIDS patients report more acts of discrimination against them than hepatitis patients.

To conclude that smoking causes lung cancer, you need to establish that

Increasing sample size will

People who wear seatbelts while driving survive more accidents than people who do not wear seatbelts.In this situation we can rule out

A researcher is exploring the physiological causes of certain learning disorders.This study is ex post facto because the

Exhibit 12-2: A study of inner-city adolescents found that the proportion of those who participate in athletics who have police records was much lower than that proportion for other adolescents in the same community.It might be concluded that participation in athletics helps adolescents avoid criminal activity.Many other hypotheses may also be suggested.Read the hypotheses (a-d) and choose the correct answer. -Refer to Exhibit 12-2.Which is a hypothesis of an alternate independent variable?