'Sherrington spoke for many physiologists when he noted that in discussion of the results of experiments on emotion involving the manipulation of animals’ nervous systems ‘we are... hopelessly cut off from introspective help’ (Sherrington 1900, 330). Psychologists, and especially psychiatric practitioners, of course experienced a far more ambiguous relation to introspection and indeed intuition as investigative modes. But even here discussion decreasingly focused on the personal experience of those who instigated lines of inquiry, and increasingly appealed to self-reports of experiment participants selected for their observational acuity alongside technical recording or measurement of bodily response (e.g. Engstrom 2003, Ch. 5; Green 2010).'