Final answer:
Adlerians believe that childhood experiences are the decisive factor in shaping personality.
Step-by-step explanation:
Adlerians believe that childhood experiences are the decisive factor in shaping personality. This belief is true. According to Alfred Adler, our birth order and the dynamics within our family play a significant role in shaping our personality. For example, older siblings may become overachievers to compensate for sharing their parents' attention, while the youngest child may be spoiled. Although Adler's hypotheses about birth order have not been conclusively confirmed by research, his emphasis on childhood experiences as influential in shaping personality remains an important aspect of Adlerian psychology.