From a recent article in the Research Digest of the British Psychological Society:
Comparative psychology is the study of animal behaviour, and its psychological underpinnings. But the term wasn’t always this restrictive. Until about 1935, plant behaviour also featured in texts in the field. Now Umberto Castiello at the University of Padua argues that it’s high time that plants regained their rightful place in the study of the psychology of non-human organisms.
In a paper published in the Journal of Comparative Psychology, Castiello gathers together a selection of recent evidence that plants can communicate, remember, recognise kin, decide and even count — “all abilities that one would normally call cognitive if they were observed in animals”. Far from being hard-wired, inflexible respondents to a changing world, they can adapt to change, benefit from classical conditioning, and even come to make predictions about the future.