Match the description of the study with the specific experimental or quasi-experimental design used:

post test only with non equivalent groups

between groups experiment

within groups experiment

pretest-posttest with nonequivalent groups

simple pretest-posttest

ex post facto

interrupted time series

interrupted time series with nonequivalent groups

1, A graduate student is running a study to examine the effect of meditation on mood. She has the participants rate their mood with a short questionnaire, then listen to their favorite music for 20 minutes, and then fill out the mood questionnaire again. Which kind of design is she using

2, A graduate student is conduction a study on the effect of meditation on mood. He randomly assigns 20 participants to the meditation condition where they practice meditation for 30 minutes, the other 20 participant quietly in a room playing soft music. He then measures the moods of all participants

3, A public health researchers wants to examine the effects of prenatal care on infant birthweight. She compares the birthweights of 20 babies whose mothers had prenatal care throughout their pregnancies to 20 babies whose mothers did not have prenatal care. What design is this?

4, A researcher wants to determine the effectiveness of a new ad campaign on recycling. He measures the amount of recycling done in a county for 30 days prior to the campaign and for 30 days after the campaign. He finds that the county's resident recycle more after the campaign.

5, A researcher wants to determine the effectiveness of a new ad campaign on recycling. He measures the amount of recycling done in a county for 30 days prior to the campaign and for 30 days after the campaign. He also measures the recycling done in a neighboring county for the 30 days before and after the campaign as a control.