One of the first developmentalists to stress the importance of systematic observation was Wilhelm Preyer (1841-1897) . In his view, careful observation was necessary to establish the ____________ of behavior and, hence, to see how behavioral patterns arose.

A) frequency
B) importance
C) sequence
D) goals

Developmentalists

Researchers who specialize in the study of how people grow and change over the course of their life, focusing on developmental psychology.

Systematic Observation

A methodical approach to data collection where the observer follows a strict set of guidelines to record behaviors, events, or other phenomena, often used in research to ensure reliability and validity.

Wilhelm Preyer

A German scientist recognized for his contributions to the study of child development and for being a pioneer in the field of developmental psychology.