in the mind vs psychological

in the mind

psychological

adj
  • Relating to the mind and behavior or to the mental, emotional, and behavioral characteristics pertaining to a specified person, group, or activity. 

  • Of or pertaining to psychology. 

  • Without an objective, or reasonably logical foundation. 

How often have the words in the mind and psychological occurred in a corpus of books? (source: Google Ngram Viewer )