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The main consequence was the deconstruction of society. For Putnam, in order to have a fully functioning society, it is necessary to have social interaction. If you don't then you will alienate yourself and if everyone does that then a valid society can't be built and the society could crumble.
The answer is Psychological Processes.
To complete the sentence (second):
This led him to suspect that these symptoms resulted from psychological processes.
Quick information:
Psychological processes are used during acquisition. The most basic psychological processes are sensation, perception, attention, learning, and memory.