Answer: regressing

AnswerCrossword Clue
regressingMove in a retrograde direction
regressingReturn to a former or less developed state
regressingReturn mentally to a former stage of life or a supposed previous life, esp. through hypnosis or mental illness
regressingREGRESS, to go back
regressingCalculate the coefficient or coefficients of regression of (a variable) against or on another variable