A study with ________________ within-group variability will require ________________ participants.

In one study, half of the rats are given one food pellet each time they correctly run a maze, and the other half of the rats are given two food pellets each time they correctly run a maze. The researchers record the average amount of time it takes the rats to run the maze. In this study, the number of food pellets represents the __________ variable.

Research aimed at determining the universality of research results is known as _________ research.

A researcher conducts a study on the effectiveness of a new drug to alleviate anxiety. Participants are given either the drug or a sugar pill, and they don’t know which they are receiving. Furthermore, the experimenter dispensing the pills does not know which pill he is giving out. This experiment is known as a _________ experiment.

A variable always has

A ___________ error refers to finding an effect when there really is no effect while a __________ error refers to not finding an effect when there really is an effect

Which of the following is a common method for controlling experimenter effects on the participants? (Select all that apply)

Janet conducts a study on social loafing (letting other group members do most of the work). Similar to a prior research study she read about, she alters whether the student participant is alone or in a group. However, she adds a new dimension: whether the students in the group know or do not know each other. She finds that students by themselves worked harder than students in groups. In addition, she found that social loafing is lessened if the students in the group know each other as opposed to if they are strangers. Janet’s study represents

Now, pretend you actually ran the study you came up with. Make up the results (the test statistic values, means and SDs), and write up the results as you would see them in an APA style research paper. Note, you do not actually have to do any calculations here! You just need to make up the means and sds for each group, the test statistic value, and the p value and write out the results. You can use the answers to the write up questions on the previous 4 assignments as a template for this! 

Is there a significant difference between the different groups on the dependent variable? Explain how you came to this conclusion.