Yes. The free plan includes 5 practice tests per course. Full access is $19.99/mo per course.

What exams does Cognify cover?

Cognify covers AP Psychology, Digital SAT, AP Biology, and AP Statistics with practice tests, rubric-graded FRQs, and score prediction.

How does Cognify compare to Khan Academy?

Cognify focuses on exam-format practice with AI grading and score prediction. Khan Academy provides broad video instruction. Cognify is purpose-built for AP and SAT exam day performance.

How does Cognify compare to UWorld and Princeton Review?

UWorld and Princeton Review rely on static question banks that students exhaust after a few sessions. Cognify generates fresh questions on demand against the official College Board exam blueprint, so every practice test is unique. FRQs are graded point-by-point against AP rubrics with specific feedback on what you earned and missed.

How accurate is the AP score prediction?

Cognify maps your percentage correct to the public AP composite scoring buckets (1-5) using historical score distributions. The prediction improves as you take more practice tests. For the Digital SAT, scores map to the 400-1600 scale using official section score conversion tables.

Does Cognify cover AP FRQ practice?

Yes. Cognify provides rubric-graded FRQ practice for AP Psychology, AP Biology, and AP Statistics. Each response is scored criterion by criterion against the official AP rubric with specific written feedback explaining what you earned, what you missed, and how to improve.

Experimental Design

AP Psychology — Scientific Foundations

Overview

How to design, conduct, and interpret experiments. Independent groups, repeated measures, matched pairs designs. Operational definitions and hypothesis testing.

Key Terms

hypothesis
operational definition
independent groups
repeated measures
matched pairs
double-blind

Exam Tips

Practice identifying IVs and DVs from scenario descriptions
Know when each experimental design is appropriate

Common Mistakes to Avoid

Forgetting to operationally define variables
Not including a control condition

Frequently Asked Questions

What is a double-blind procedure?

Neither the participants nor the researchers interacting with them know who is in the experimental vs control group. This prevents both participant and experimenter bias.

Ready to practice Experimental Design?

AI-generated questions with instant feedback. Free to start.

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Experimental Design

AP Psychology — Scientific Foundations

Overview

How to design, conduct, and interpret experiments. Independent groups, repeated measures, matched pairs designs. Operational definitions and hypothesis testing.

Key Terms

hypothesis
operational definition
independent groups
repeated measures
matched pairs
double-blind

Exam Tips

Practice identifying IVs and DVs from scenario descriptions
Know when each experimental design is appropriate

Common Mistakes to Avoid

Forgetting to operationally define variables
Not including a control condition

Frequently Asked Questions

What is a double-blind procedure?

Neither the participants nor the researchers interacting with them know who is in the experimental vs control group. This prevents both participant and experimenter bias.

Ready to practice Experimental Design?

AI-generated questions with instant feedback. Free to start.

Start Practicing Free

Experimental Design

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Experimental Design?

Related Scientific Foundations Topics

Experimental Design

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Experimental Design?

Related Scientific Foundations Topics