They studied the effects on a few dozen college students of listening to the first 10 minutes of the Mozart Sonata for Two Pianos in D Major (K.448). They found a temporary enhancement of spatial-temporal reasoning, as measured by the Stanford-Binet IQ test. There were many attempts to replicate their results but most were unsuccessful (Willingham 2006). One researcher commented that the "very best thing that could be said of their [Shaw's and Rauscher's] experiment—were it completely uncontested—would be that listening to bad Mozart enhances short–term IQ" (Linton). Rauscher has moved on to study the effects of Mozart on rats. Both Shaw and Rauscher have speculated that exposure to Mozart enhances spatial-reasoning and memory in humans.