Previous research suggests that animation is an effective way in capturing young children's attention in educational television programmes. You want to explore and describe whether and how frequently animation (such as animated drawings and puppets) is actually applied by a specific television station's educational television programmes over a period of a year. The measuring instrument that you would use in your study would be ... .

(1) a moderator guide

(2) pre-coded content analysis categories

(3) a questionnaire with Likert scales

(4) an interview schedule with Thurstone scales