1. The Optimal Number of Response Alternatives for a Scale: A Review
2. Reforming Again, Again, and Again
3. Henderson, C.H. (1994), “Manual training”,Popular Science Monthly, Vol. 46 No. 1, pp. 48‐62.
4. Henderson, C.H. (1998), “The philosophy of manual training”,Popular Science Monthly, Vol. 53 No. 1, pp. 322‐39.
5. Horn, E. (1922), “Criteria for judging the project method”,Educational Review, Vol. 63 No. 1, pp. 93‐101.