Strength : Wundt introspection
P - methods were systematic and well-controlled
E - all introspections were recorded in a controlled environment ensuring that any possible extraneous variables were not a factor. + ticking metronome was used to record the introspections which increased the accuracy of the results
E - = procedures were all standardised so that all pps were tested in the same way removing any bias
L - Wundt's research is able to be replicated as it was highly controlled