Experiments/Correlations Practice

Experiments allow researchers to isolate

• predictions

• cause and effect

• opinions

The dependent variable

• is what's manipulated

• is what's measured

The independent variable is

• what's measured

• what's manipulated

To be a true experiment, it must use

• random assignment

• case studies

• predictions

When neither the experimenter or the subjects know who is in the control group or the experimental group, it's called a _________ procedure.

• causal

• single blind

• double blind

What is the benefit of an operational definition?

• it tells us how the case study evolved

• it shows us predictions to study further

• it allows us to replicate the experiment

An experiment is testing whether ADHD medication helps people focus or not. What is the independent variable?

• ADHD medication

• focusing

An experiment is testing whether ADHD medication helps people focus or not. What is the dependent variable?

• ADHD medication

• focusing

Which type of correlation occurs when two variables increase or decrease together?

• positive correlation

• negative correlation

What type of correlation occurs when variables go in inverse directions from one another?

• positive correlation

• negative correlation