Jessica Andrews Todd is an Associate Research Scientist in the Cognitive and Technology Sciences Center at Educational Testing Service. Jessica obtained a Ph.D. degree in learning sciences from Northwestern University. She has two lines of research in the areas of collaboration and cognition. One line of work examines the cognitive processes underlying collaborative learning, focusing particularly on how people encode into memory and rely upon accurate and inaccurate information as a function of their collaborative experiences. A second line of work explores the use of digital environments in supporting student learning during collaboration and assessing individuals’ cognitive and noncognitive skills. Specifically, Jessica has developed and applied approaches for (1) identifying the measurable components of complex constructs such as collaborative problem solving and (2) reasoning up from learner behaviors in log data from games and simulations to inferences about high level proficiencies.