EPPP Practice Tests Compared: A Side-by-Side Guide (2026)

Short verdict: the six practice test options below differ in the ways that decide whether a score means anything. ASPPB's official sample uses real EPPP items, but it is a 100-item, 2-hour calibration check with no explanations. AATBS lists 8 full-length exams inside a one-time package. PsychPrep lists 5 full-length exams with detailed written rationales. PrepJet sells a monthly question bank with a free trial. Mometrix offers a low-cost guide and a free practice test. thePsychology.ai has 16 timed full-length exams, an explanation on every question, and a 7-day free trial. The full side-by-side, using figures our comparison posts already track, is below.

Before the table, the disclosure I owe you on any page that mentions our product. I am Dr. Anders Chan. I scored 588 on the EPPP, and I built thePsychology.ai. I have a stake in which one you pick. So I will say where the other options are the better fit, and where ours falls short.

What makes a practice test useful

Start with the science, because it is the least controversial part. Pulling information out of memory is stronger than putting it back in, an effect researchers call the testing effect, or test-enhanced learning. A meta-analysis of 222 studies covering 48,478 students found that quizzing produces a medium effect on learning (g = 0.499) compared with restudying the same material (Yang et al., 2021). For licensure exams in particular, a scoping review of U.S. national exams for medical students found that the number of practice questions completed and practice exam scores were the strongest preparation-related predictors of passing, and that no single commercial resource had a consistent advantage (Jeyaraju et al., 2023). Reps beat brands.

One honest limit belongs up front. No study has measured practice exams against actual EPPP scores. Every claim that a given bank raises EPPP scores is an extrapolation from classroom learning and other licensure exams, not EPPP-specific evidence. The longer argument is in do EPPP practice tests actually work. That does not make practice tests useless. It means you should judge one on its mechanics, not its marketing.

Those mechanics are short and specific:

• Full length, or honestly labeled. The real exam is 225 questions in 4 hours and 15 minutes. A 100-item sample can calibrate your sense of the wording. It cannot build the stamina a four-hour sitting demands. What a real EPPP practice test looks like covers the shape in detail.
• Domain coverage that mirrors the blueprint. A test weighted toward whichever content was easy to write tells you nothing about your weak domains.
• Timed conditions. Untimed practice systematically overestimates how ready you are for a clock.
• Explanations for every answer. The score tells you where you are. The rationales are what move you. Testing without feedback is half the effect.
• A score you can act on. A single percentage is trivia. A percentage plus the two domains doing the damage is a study plan.

There is also the question of what a score predicts. In the results members send us, the score on a full-length, timed practice exam before test day has tracked outcomes more closely than the number of sims taken. I keep the details and the caveats in what practice exam score predicts passing the EPPP. The practical read: take one full-length sim early, score it by domain, and repair gaps between sims instead of collecting sims.

The comparison table

Program	Full-length exams	Price	Explanations	Free option
ASPPB official sample (SEPPO)	None listed (a 100-item, 2-hour sample)	$30 online, $82.50 at a Pearson test center, per attempt	None	No, paid per attempt
AATBS	8 full-length	$849 to $1,799 one-time (self-study $849 to $1,449)	Not published	None listed
PsychPrep	5 full-length	$199 to $1,419 per package, 1 to 9 months, plus renewal fees	Yes, written rationales	Free sample questions and a free strategies seminar, no trial
PrepJet	Not published	$159 to $429/mo, less on 3-month and 6-month plans	Yes, written rationales on domain quizzes	Free trial, no card
Mometrix	Not published	About $70 to $75 (guide or flashcards), $99.99/mo online course	Not published	Free online practice test, no signup
thePsychology.ai	16 full-length	$60/mo or $349/yr	Yes, a rationale on every question	7-day free trial, no card, plus a free interactive sample

How to read the table

Three notes before the section that matters most.

Not published means what it says. A vendor that does not state a count or a rationale policy on the pages our comparison posts checked gets "not published" here. We did not research new numbers for this page. Every figure above is one our posts already track: Best EPPP Prep Programs Compared (prices read September 5, 2026), EPPP Exam Simulator (counts read September 10, 2026), thePsychology.ai vs Mometrix (August 2026), and SEPPO EPPP Practice Exam (ASPPB's sample exam page and candidate handbook).

AATBS is one of three brands, not one of three rivals. AATBS, Taylor Study Method, and Academic Review share a parent company. They are different price points in the same house, not independent second opinions. This table includes only AATBS, so read it with that in mind if you are also considering the other two.

Counts are floors, not guarantees. Access drawn from a fixed bank starts repeating once you have seen the items, and a score on questions you have already seen measures your memory of that bank, not the material. Ask any vendor how many distinct full-length forms exist before you pay.

Who each one fits

ASPPB's official sample (SEPPO). This is the only practice exam built from real EPPP items, which makes it the best wording rehearsal available. It is also the one ASPPB tells candidates not to use as a diagnostic: 100 items, 2 hours, one percent score, no rationales, and you can only buy it after your licensing board authorizes you to sit. It fits a candidate two to four weeks out who wants contact with real item phrasing before test day. It does not fit anyone looking for a study plan.

AATBS. AATBS fits the candidate who wants maximum coverage and a fixed, structured plan paid for once, and who values a name that supervisors recognize. It lists 8 full-length exams inside a large question bank. It is the most expensive option here, and the traditional model is comprehensive rather than targeted. If a training program reimburses it, take the free thing.

PsychPrep. PsychPrep fits the candidate who learns from long written rationales and wants a fixed package with email feedback and printed materials. It lists 5 full-length exams with explanations, and there is no trial, only free sample content. If you want a person reading your progress, this is one of the options here that sells that.

PrepJet. PrepJet fits the candidate who already knows the content and wants to drill the test. It is a subscription with a free trial in this table, and it includes written rationales on domain quizzes and a readiness score. Its own line is that it teaches the test, not the content, so it fits a candidate with strong content and test anxiety better than a candidate who is rebuilding the material.

Mometrix. Mometrix fits a budget-first candidate who wants a low-cost study guide or flashcard set and a free practice test with no signup. It is a general test prep publisher, not an EPPP specialist, so treat it as a supplement and a cheap entry point rather than a full question engine.

thePsychology.ai. Ours fits the candidate who wants adaptive, application-based practice, 16 timed full-length exams, an explanation on every question, and wellness tools built into the study flow, at the lowest monthly price in the table. The honest limits: we are newer, so the track record is shorter, and Android users get the mobile-responsive web app rather than a native app.

Start free

You can judge the question style before you pay anyone. Work through the free interactive EPPP sample, one question per domain with explanations and no signup. Then start thePsychology.ai free for 7 days, no card, and take a full-length, timed sim that scores you by domain. If a different program fits you better after reading the table above, that is a fine outcome too.

Frequently asked questions

Is the ASPPB sample exam a full-length practice test?

No. It is 100 questions in 2 hours, roughly half the length of the real exam, and it reports a single percent score with no explanations. It is a wording and format rehearsal, not a diagnostic, and you can only buy it after your board authorizes you to sit.

Which practice tests include explanations?

PsychPrep, PrepJet, and thePsychology.ai all publish written rationales, and the details of each are in the table above. ASPPB's sample exam has no rationales, and AATBS and Mometrix do not state an explanation policy on the pages our comparison posts checked.

How many full-length practice tests should I take?

Two or three, spaced across your study window, with targeted repair between them. The score on a full-length, timed sim was the readiness signal in the member reports we track, not the raw number of sims.

What is the cheapest way to start?

Free. thePsychology.ai has a 7-day trial with no card and a free interactive sample, Mometrix has a free online practice test with no signup, PrepJet has a free trial with no card, and PsychPrep offers free sample questions and a strategies seminar. ASPPB's sample exam is paid, at $30 per online attempt.

References

Association of State and Provincial Psychology Boards. (2025). EPPP candidate handbook (July 2025). https://asppb.net/

Binks, S. (2026). Why desirable difficulties 'work': A review of the evidence from cognitive and educational psychology and some caveats for the health professions education field. Journal of Evaluation in Clinical Practice, 32(1), e70349. https://doi.org/10.1111/jep.70349

Jeyaraju, M., Linford, H., Bosco Mendes, T., Caufield-Noll, C., & Tackett, S. (2023). Factors leading to successful performance on U.S. national licensure exams for medical students: A scoping review. Academic Medicine, 98(1), 136-148. https://doi.org/10.1097/ACM.0000000000004877

Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249-255. https://doi.org/10.1111/j.1467-9280.2006.01693.x

Yang, C., Luo, L., Vadillo, M. A., Yu, R., & Shanks, D. R. (2021). Testing (quizzing) boosts classroom learning: A systematic and meta-analytic review. Psychological Bulletin, 147(4), 399-435. https://doi.org/10.1037/bul0000309