RESEARCH 3 REVIEW 3

A college instructor is giving weekly quizzes to students in one section of his course but no weekly quizzes to students in another section to see whether this has an effect on their test performance.

• EXPERIMENTAL RESEARCH DESIGN

• NON-EXPERIMENTAL RESEARCH DESIGN

Xavier is conducting a study on the effect of an online game on test scores. He has two groups of subjects to whom he gives a pretest. Xavier then gives one group the treatment (the online game) and gives the other group worksheets. He then gives each group a posttest.

• EXPERIMENTAL RESEARCH DESIGN

• NON-EXPERIMENTAL RESEARCH DESIGN

Mary's study primarily relies on observation, surveys, and case studies.

• EXPERIMENTAL RESEARCH DESIGN

• NON-EXPERIMENTAL RESEARCH DESIGN

A chemist wishes to test the effect of four chemical agents on the tensile strength of a particular type of cloth, measured in grams per denier (gpd). The raw cloth is delivered in bolts, and one expects significant tensile strength variability between bolts.

• EXPERIMENTAL RESEARCH DESIGN

• NON-EXPERIMENTAL RESEARCH DESIGN

A principal wants to determine the relationship between a teacher’s personality and his teaching performance.

• EXPERIMENTAL RESEARCH DESIGN

• NON-EXPERIMENTAL RESEARCH DESIGN

The effect of hitting the drumstick on the drum

• EXPERIMENTAL

• NON-EXPERIMENTAL

The correlation between how hard the drum is hit and the loudness of the

sound that comes out

• EXPERIMENTAL

• NON-EXPERIMENTAL

A researcher measuring the impulsivity of a large sample of drivers and looks

at the statistical relationship between this variable and the number of traffic

tickets the drivers have received

• EXPERIMENTAL

• NON-EXPERIMENTAL

A researcher conducting detailed interviews with unmarried teenage

fathers to learn about how they feel and what they think about their role as

fathers and summarizes their feelings in a written narrative

• EXPERIMENTAL

• NON-EXPERIMENTAL

A researcher studying on how accurate people’s first impressions are

• EXPERIMENTAL

• NON-EXPERIMENTAL