CHS 2025 AP Exam Review: 1 Science Practices

Front

A researcher wants to examine whether listening to classical music improves test performance. She randomly assigns students to either listen to classical music or sit in silence before taking a math test. In this experiment, the dependent variable is:

Back

The math test scores

Front

What would make Dr. Garcia's study on a new therapy for anxiety symptoms stronger? Options: Using a convenience sample, Telling participants which group they're in, Using double-blind procedures, Selecting only participants who want the new therapy

Back

Using double-blind procedures

Front

A researcher hypothesizes that 'meditation reduces stress.' This hypothesis is scientific because it is:

Back

Falsifiable

Front

In a study on the effects of caffeine on attention, participants who receive decaffeinated coffee but believe it contains caffeine and subsequently show improved attention are demonstrating:

Back

The placebo effect

Front

In Milgram's obedience experiments, the dependent variable was:

Back

The level of shock participants were willing to administer

Front

A researcher tests whether yoga or meditation is more effective for reducing anxiety. Participants choose which intervention they prefer. This research design has a problem with not using which technique intended to minimize differences between control & experimental groups?

Back

Random assignment

Front

Which of the following is an essential component of a true experiment? A large sample size, Self-report measures, Naturalistic observation

Back

Manipulation of an independent variable

Front

Researchers found that the more hours students spent on social media, the lower their GPA tended to be. This finding represents:

Back

A negative correlation

Front

A study shows that children who play violent video games tend to display more aggressive behavior. The researchers conclude that violent video games cause aggression. This conclusion demonstrates:

Back

The directionality problem

Front

A study finds a correlation between ice cream consumption and drowning deaths. The most likely explanation is:

Back

A third variable (warm weather) influences both