Research on human problem solving may be about to face a conceptual change from individual to collaborative problem solving. Many challenging problems in the real world are solved by groups or teams. This is increasingly recognized by the problem solving research community, which traditionally has emphasized cognitive processes in individual problem solving. In this paper we argue how approaches for investigating complex problem solving can be conceptually extended towards collaborative problems solving. We will present several current examples of how to measure collaborative processes in a standardized way. One example is the InBox HD, a computer-based in-basket simulation with collaborative elements. The second example is the scenario Product Planning, implemented in the ColPS HD framework, which involves chat-based human-to-agent communication. We will elaborate on how these tools can be used to emulate realistic collaborative processes in the standardized setting of a psychological laboratory and indicate directions for future developments.