USMLE Step 2 CK Human Development Practice Questions
2–4% of Step 2 CK · 13 practice questions with a note on every option
316 questions in 16 timed 30-minute blocks, with your score in human development and every other content area.
Free human development drillA 16-month-old girl is brought to the physician because her parents worry that her legs have looked bowed since she began walking 3 months ago. She was born at term, is healthy, and eats a varied diet that includes vitamin D-fortified milk. Her length and weight are at the 50th percentile. Examination shows symmetric bowing of both legs with an intercondylar distance of 4 cm when the ankles touch. There is no lateral knee thrust when she walks, her gait is normal for her age, and her wrists and ribs are normal. Which of the following is the most likely diagnosis?
Human Development on Step 2 CK
Human Development is 2–4% of Step 2 CK. It is the well-patient visit: growth and milestones, adolescent care, preventive screening for adults and care of older adults.
- Share of Step 2 CK
- 2–4% of the exam, per the USMLE content outline
- On our mock exam
- 9 of 316 questions, with your score for this system in the result
- Our drill
- 10 questions from 13 human development questions, untimed, a note on every option; one free attempt, unlimited with a pass
What Step 2 CK human development questions test
- Well-child care: growth, milestones and developmental screening
- Adolescent health: confidential care, risk screening and puberty
- Adult preventive care: USPSTF screening recommendations
- Care of older adults: falls, frailty and normal aging
Sit all 316 questions in timed blocks
316 questions in 16 timed 30-minute blocks, with your score in human development and every other content area.
Free human development drillHow to study it
- Learn screening start ages and intervals as a table.
- Know which milestones are expected at each well-child visit.
- Expect quick questions; aim to answer them in under a minute.
Common questions
Which screening recommendations do these questions follow?
Current USPSTF recommendations, such as biennial mammography from 40 to 74 and colorectal screening from 45 to 75.
How many questions on our mock?
9 of 316, inside the content outline’s 2–4% range.
316 questions in 16 timed 30-minute blocks, with your score in human development and every other content area.
Free human development drillThe other Step 2 CK systems
Sources
- USMLE: Step 1 (blocks, items, testing day, break time)
- USMLE: Step 2 CK (blocks, items, testing day, break time)
- USMLE: Test delivery software updates for Step 2 CK and Step 1 (May 2026)
- USMLE: Step 1 content outline and specifications
- USMLE: Step 2 CK content outline and specifications
- USMLE: Examination results and scoring (minimum passing scores)
- USMLE Bulletin: Scoring and score reporting (about 60% correct to pass; result timing)
- USMLE Bulletin: Eligibility (attempt limits)
- USMLE: Apply for exams (2026 and 2027 fees, FSMB registration, region fees)
- USMLE: Performance data (pass rates)
- Intealth ECFMG: Fees overview (ECFMG Certification)
Original practice questions written to the USMLE content outlines and current standard references. USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and NBME. Independent practice, not affiliated with or endorsed by the FSMB, NBME or Intealth (ECFMG). Follow current guidelines in clinical practice.