Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Input: Max Lu ̈ scher ( September 9 , 1923 – February 2 , 2017 ) was a Swiss psychotherapist .
Output:
Max Lu ̈ scher ( September 9 , 1923 – February 2 , 2017 ) was a Swiss psychotherapist known for inventing the Lu ̈ scher color test , a tool for measuring an individual 's psychophysical state based on his or her color preferences .