• Natural Language Processing and Psychosis: On the Need for Comprehensive Psychometric Evaluation 

      Cohen, Alex S.; Rodriguez, Zachary; Warren, Kiara K.; Cowan, Tovah; Masucci, Michael D.; Edvard Granrud, Ole; Holmlund, Terje Bektesevic; Chandler, Chelsea; Foltz, Peter W.; Strauss, Gregory P. (Journal article; Tidsskriftartikkel, 2022-06-23)
      <p><i>Background and Hypothesis:</i> Despite decades of “proof of concept” findings supporting the use of Natural Language Processing (NLP) in psychosis research, clinical implementation has been slow. One obstacle reflects the lack of comprehensive psychometric evaluation of these measures. There is overwhelming evidence that criterion and content validity can be achieved for many purposes, ...
    • Reflections on the nature of measurement in language-based automated assessments of patients' mental state and cognitive function 

      Foltz, Peter W.; Chandler, Chelsea; Diaz-Asper, Catherine; Cohen, Alex S.; Rodriguez, Zachary; Holmlund, Terje Bektesevic; Elvevåg, Brita (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-22)
      Modern advances in computational language processing methods have enabled new approaches to the measurement of mental processes. However, the field has primarily focused on model accuracy in predicting performance on a task or a diagnostic category. Instead the field should be more focused on determining which computational analyses align best with the targeted neurocognitive/psychological functions ...
    • Reflections on the nature of measurement in language-based automated assessments of patients' mental state and cognitive function 

      Foltz, Peter W.; Chandler, Chelsea; Diaz-Asper, Catherine; Cohen, Alex S.; Rodriguez, Zachary; Holmlund, Terje Bektesevic; Elvevåg, Brita (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-22)
      Modern advances in computational language processing methods have enabled new approaches to the measurement of mental processes. However, the field has primarily focused on model accuracy in predicting performance on a task or a diagnostic category. Instead the field should be more focused on determining which computational analyses align best with the targeted neurocognitive/psychological functions ...
    • Towards a temporospatial framework for measurements of disorganization in speech using semantic vectors 

      Holmlund, Terje Bektesevic; Chandler, Chelsea; Foltz, Peter W.; Diaz-Asper, Catherine; Cohen, Alex S.; Rodriguez, Zachary; Elvevåg, Brita (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-10)
      Incoherent speech in schizophrenia has long been described as the mind making “leaps” of large distances between thoughts and ideas. Such a view seems intuitive, and for almost two decades, attempts to operationalize these conceptual “leaps” in spoken word meanings have used language-based embedding spaces. An embedding space represents meaning of words as numerical vectors where a greater proximity ...