True or False: Hartlet argued from a materialist perspective that vibrations within nerves were the physical events underlying thought.

Hartlet's argument from a materialist perspective correctly posits that physical processes, such as vibrations within nerves, are fundamental to understanding thought. This perspective aligns with the materialist view that all mental phenomena can be explained through physical events, suggesting that thoughts are not separate from but are instead rooted in physical processes occurring in the nervous system. By focusing on vibrations within nerves, Hartlet is emphasizing the connection between physical states and mental states, underlining the idea that our cognitive experiences arise from underlying biological functions. This viewpoint is significant in the history of psychology as it marks a move toward a scientific understanding of mental processes, a cornerstone of modern psychological thought.