I have designed a questionnaire to test which of three motivational constructs can best be used to describe learners motivation. 25 statements were designed to test the three constructs (each question relating to one of the three), they were randomly ordered and participants were asked to respond to each statement by ticking in the appropriate place on one of 6 points along a scale from strongly agree to strongly disagree. I had planned to use exploratory factor analysis to analyse the data, although now I wonder whether a different method of analysis might be better? I was told I would need about 300 responses for factor analysis to be effective/appropriate, and although I hope not to get much fewer than that - I am doing a comparative study with two categories of students, so expect to collect somewhere between 125-140 from each of the two categories. Could anyone advice me what methods of analysis might be more suitable?