# University study finds a failed practical still teaches

> A research poster from the School of Underlying Conditions reports that student pairs whose nerve recording never produced a signal later outscored their classmates at finding a fault in the equipment.

A practical class that ends without a result is ordinarily entered in the book
as a bad afternoon. _Nothing on the Trace: What Second-Year Students Learn from
a Nerve Recording That Never Fires_, a research poster by Dr Vigdis Emenike,
Senior Lecturer, and Dr Brynjar Obiora, Senior Research Fellow, both of the
School of Underlying Conditions, enters it differently.

The poster follows 212 pairs of students through a single laboratory session in
which each pair attempts to record the electrical activity of a nerve. Some
pairs had a signal inside five minutes. Nineteen pairs never had one. Five weeks
on, the pairs who had waited longest scored highest when shown a faulty
recording and asked what to check, and no differently from anyone else when
asked a question about the nerve.

> The demonstrators wrote a time on every bench sheet for three years, and at no
> point did anybody tell them what it was for. We are in their debt, and we have
> now told them.
>
> --- Dr Vigdis Emenike, Senior Lecturer, School of Underlying Conditions

The work brings the School's teaching-laboratory records into alignment with its
assessment outcomes, connecting an observational bench-level dataset to a
learning-transfer framework and anchoring both in a single cohort-spanning
analysis. The University counts its teaching laboratories among the places where
its research is done, and the poster is released on that understanding.

Dr Obiora noted that one bench had run an entire term with a broken lead. "It
was reported eleven times, by eleven pairs, each of whom assumed they were the
first," he said. "That is a finding of a kind, though it is not on the poster."

The full poster is available from the University's research repository under an
open licence, doi:10.5555/slop.ie0jvl.