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Dibs Fall 2026

PSYCH 15

Introductory Psychobiology

Lecture, three hours. Designed for nonmajors. Survey of genetic, evolutionary, physiological, pharmacological, and experiential factors affecting behavior. Using comparative approach where appropriate, emphasis on relevance of biological mechanisms to understanding of humans and their interaction with their environment. P/NP or letter grading.

Course statistics

Predicted GPA
3.00
n = 301 · 5 terms · ± 0.031
A range
37%
of letter grades
Taken P/NP
12%
80% of those passed
D / F / W
5.3%
incl. withdrawals

Sections in Fall 2026

Not offered in Fall 2026.

Enrollment history

Final enrollment per term, averaged across that term's sections. Four years deep, summer excluded. Per-section live curves are on each section page.

  • 8522W
  • 9823W
  • 9523S
Enrolment by term: 22W 85, 23W 98, 23S 95
Peak 98 Most recent 95 in 23S 3 terms on record

Grade distribution

  • A+ 33 · 9.6%
  • A 51 · 14.9%
  • A- 28 · 8.2%
  • B+ 43 · 12.6%
  • B 34 · 9.9%
  • B- 11 · 3.2%
  • C+ 36 · 10.5%
  • C 32 · 9.4%
  • C- 17 · 5.0%
  • D+ 4 · 1.2%
  • D 1 · 0.3%
  • D- 3 · 0.9%
  • F 8 · 2.3%
  • P 33 · 9.6%
  • NP 8 · 2.3%

Grey bars are non-letter outcomes — P/NP, S/U, incompletes. They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Instructor Predicted Raw n Terms A range
KRASNE, FRANK 2.78 2.76 150 2 25%
WONG, JARED 2.97 2.97 89 1 43%
PAQUETTE-SMITH, MELISSA 3.43 3.53 62 2 60%

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department — so an instructor with a handful of students sits near the course mean rather than topping the list.

By term