An ideal way to carry out the experiments is by using RCT (Randomized Controlled Trial), whereby a user is subject to one of the four modes of feedback.
There is relatively little research done to understand how learning is affected by providing two different modes of feedback in a sequential manner.
We have therefore, opted for subjecting every volunteers to all the four modes of feedback, but doing so carefully so that the effect of one feedback does not influence that of another.
The literature has widely reported on the effectiveness of different modes of feedback, such as scores, grades, written comments, and comments plus grades (Black and Wiliam, 1998a, 1998b; Brookhart, 2011a, 2011b; Butler, 1988; Butler and Nisan, 1986; Crooks, 1988; Frisbie and Waltman, 1992; Guskey and Lee, 2013; Page, 1958).
Each menu audit will be followed by two modes of feedback: a written feedback report and a verbal feedback/support via telephone.
Intervention schools will have their canteen menu audited by trained dieticians, and then provided with two modes of feedback: a written feedback report and telephone feedback calls.
These might include the influence of instructions or different modes of feedback, the specificity of training, and the effect of dose on the response to training.
24 25 The magnitude of this effect is greater when: baseline adherence is low, feedback frequency is higher, feedback is provided with antecedent stimuli and using multiple modes of feedback.
Moreover, means of monitoring consistency in completion of the LC-self ratings and/or encouraging their completion by phone calls, automated text messages, or other modes of feedback might also be desirable.
