1. Introduction. - 1. 1 Why Study Question Asking?. - 1. 2 Why Study Design Cognition?. - 1. 3 Research Questions and Approach. - 2. Question Asking: A Fundamental Dimension in Design thinking. - 2. 1 Contemporary Topics in Design Research. - 2. 2 The Question-Decision Duality. - 2. 3 Learning from Existing Taxonomies of Questions. - 3. Development of a Taxonomy that is Comprehensive of the Questions Asked while Designing. - 3. 1 Context for the Observations on the Nature of Questions Asked While Designing. - 3. 2 Definition of a Question. - 3. 3 An Argument for the Search for the Possible and Its Characterization as Question Categories. - 3. 4 Comparison of the Taxonomic Approaches. - 4. Hypothesis Generation in the Field: Shadowing the Design Team. - 4. 1 Grounded Principle for Hypotheses Generation. - 4. 2 Context of the Preliminary Observations. - 4. 3 Two Techniques for Capturing Design Activity in the Field and Generating Hypothesis. - 4. 4 Findings of the Field Research. - 5. Designing the Intervention: Differentiating Designing from Problem Solving. - 5. 1 Deriving Requirements for the Design Experiment. - 5. 2 Addressing the Requirements. - 5. 3 Meeting the Requirements: The Pilot Experiment. - 6. Learning from the Pilot Experiments: Good Questions and Discoveries. - 6. 1 Improving the Experimental Methodology. - 6. 2 Augmenting the Hypotheses: Discovery Making as another Internal Performance Metric. - 6. 3 Refining the Hypotheses: Characterization of a Good Question. - 6. 4 The Augmented Hypotheses. - 7. Conducting the Redesigned Experiment: Putting the Question Asking Aspect of Design Cognition under the Microscope. - 7. 1 Data Collection and Analysis Procedures. - 7. 2 Data Analysis and Results. - 7. 3 Revisiting the Hypotheses. - 8. Synthesizing a Question-centric Design Thinking Model. - 8. 1Question Asking as a Process. - 8. 2 Question Asking as Creative Negotiation. - 8. 3 Question Asking as a Mechanism for Managing Convergent and Divergent Thinking Modes. - 8. 4 Implications of the Verified Hypotheses. - 8. 5 A Question-centric Design Thinking Model. - 8. 6 Potential Applications of the Design Thinking Model. - References. Language: English