11/22 Check

Give one example of an ethical issue researchers need to consider when conducting experiments. 

• Take regular tea breaks 
• Being able to get a large sample size
• Gain informed consent
• Make sure the study is reliable 

This part of the experiment serves as a basis of comparison.

• experimental group
• control group
• data
• variables

These are variables that can potentially distort the relationship between the explanatory and response variables.

• confounding variables

• confusing variables

• constructing variables

• extraneous variables

Experiments that assign treatments to units using a chance process.

• random assignment

• stratified assignment

• block assignment

• predetermined assignment

an experiment in which only the participants are unaware of who received the treatment

• Placebo Effect

• Double Blind

• Self-Fulfilling Prophecy

• Single Blind

a change in participants illness or behavior that results from a belief that the treatment will have an effect rather than from the actual treatment

• Placebo Effect

• Self-Fulfilling Prophecy

• Longitudinal Study

• Control Group

What is the term for a difference between the means of an experimental and control groups NOT likely due to chance?

• Operationally defined

• Statistically Significant

• Normal Curve

• Standard Deviation

• Experimental Group

An experiment in which neither the subjects nor those who interact with them and measure the response variable know which treatment a subject is receiving.

• placebo

• single-blind

• confounding

• double-blind

Mr. Payne randomly assigned half of his AP Computer Science students to study for 3 hours, and the other half to study for 6 hours.

• Because he randomly assigned students, he can make assumptions about the entire class.

• Because he randomly assigned students, he can assume causation.

• Because he did not randomly assign students, he can assume causation.

• Because he randomly assigned students, he can only assume correlation but not causation.

What kind of experiment is shown in the picture?

• Block Design

• Completely Randomized Design

• house design

• Sample design