Psychological Dependence: The psychological need or craving for a drug.

心理依賴：對毒品的心理需求或渴望。

Psychology: The scientific study of the behavior of individuals and their mental processes.

心理學：研究個人行為及其心理過程的科學。

Psychometric Function: A graph that plots the percentage of detections of a stimulus (on the vertical axis) for each stimulus intensity on the horizontal positions of corresponding images in the two eyes.

心理測量功能：在兩眼對應圖像的水平位置上繪制每一刺激強度的檢測百分比（縱軸）的圖表。