Field studies of psychologically targeted ads face threats to internal validity
Eckles, Gordon and Johnson write a comment on a paper by Matz, Kosinski, Nave and Stillwell on psychological targeting as an approach to digital mass persuasion, published in the Proceedings of the National Academy of Sciences. Their title states the argument: field studies of psychologically targeted ads face threats to internal validity. The comment was published as a letter to the editor.
Eckles, Gordon and Johnson write a comment on a paper by Matz, Kosinski, Nave and Stillwell on psychological targeting as an approach to digital mass persuasion, published in the Proceedings of the National Academy of Sciences. Their title states the argument: field studies of psychologically targeted ads face threats to internal validity. The comment was published as a letter to the editor.
Written from the abstract as shown on the OpenAlex record, read 2026-11-04.
What our sources record
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Eckles, D., Gordon, B. R., & Johnson, G. A. (2018). Field studies of psychologically targeted ads face threats to internal validity. PNAS, 115(23), E5254-E5255. doi:10.1073/pnas.1805363115.