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.

Research Methods

AP Psychology — Scientific Foundations

Overview

Experimental, correlational, case study, survey, and naturalistic observation methods. Variables, control groups, random assignment, and replication.

Key Terms

independent variable
dependent variable
confounding variable
random assignment
control group
replication

Exam Tips

Be able to design an experiment from a scenario
Know the difference between correlation and causation

Common Mistakes to Avoid

Confusing random assignment with random selection
Saying correlation proves causation

Frequently Asked Questions

What is the difference between random assignment and random sampling?

Random sampling is selecting participants from a population. Random assignment is placing selected participants into experimental or control groups. Both reduce bias but in different ways.

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

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Research Methods

AP Psychology — Scientific Foundations

Overview

Experimental, correlational, case study, survey, and naturalistic observation methods. Variables, control groups, random assignment, and replication.

Key Terms

independent variable
dependent variable
confounding variable
random assignment
control group
replication

Exam Tips

Be able to design an experiment from a scenario
Know the difference between correlation and causation

Common Mistakes to Avoid

Confusing random assignment with random selection
Saying correlation proves causation

Frequently Asked Questions

What is the difference between random assignment and random sampling?

Random sampling is selecting participants from a population. Random assignment is placing selected participants into experimental or control groups. Both reduce bias but in different ways.

Ready to practice Research Methods?

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

Start Practicing Free

Research Methods

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Research Methods?

Related Scientific Foundations Topics

Research Methods

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Research Methods?

Related Scientific Foundations Topics