Currently I am searching for some reliable and valid tools for assessing preschoolers' problem solving abilities. The specific problem solving skills I intend to assess include problem representation, planning, execution, and evaluation (based on Zelazo et al. (1997)'s framework of problem solving).
Although Zelazo et al. (1997) reviewed a set of related tools, these tools were mainly used for assessing executive functioning in the literature, rather than the problem solving skills specifically. My question is: Are there any existing validated measures assessing the problem solving skills (i.e., problem representation, planning, execution, and evaluation) among preschoolers? Thanks!