Find peer-reviewed, published research using the Inquisit Counting Span Task
Case, R., Kurland, M. D., & Goldberg, J. (1982). Operational efficiency and the growth of short-term memory span. Journal of Experimental Child Psychology, 33, 386-404.
Bull, R., & Johnston, R. S. (January 01, 1997). Children's arithmetical difficulties: contributions from processing speed, item identification, and short-term memory. Journal of Experimental Child Psychology, 65, 1, 1-24.
Cowan, N., Towse, J. N., Hamilton, Z., Saults, J. S., Elliott, E. M., Lacey, J. F., et al. (2003). Children’s working-memory processes: A response-timing analysis. Journal of Experimental Psychology: General, 132, 113-132.
Conway, A. R., Kane, M. J., Bunting, M. F., Hambrick, D. Z., Wilhelm, O., & Engle, R. W. (January 01, 2005). Working memory span tasks: A methodological review and user's guide. Psychonomic Bulletin & Review, 12, 5, 769-86.