I remember feeling patronised and annoyed by 'clever' psych study manipulations when I was 17. Even tanking into account my baseline grumpums behaviour, it always seemed obvious that a good proportion of students are giving you total garbage. https://t.co/nQ0WYlluVg
I remember one occasion where the baseline questionnaire was ~300 questions long and was obviously mostly repeated measures. I answered about 1/3 before ticking boxes at random for the rest