Which concept emphasizes that individuals are born without built-in mental content?

The blank slate theory, also known as "tabula rasa," suggests that individuals are born without any inherent mental content or pre-existing knowledge. This concept, closely associated with philosophers like John Locke, implies that all knowledge and ideas are acquired through experience and interaction with the environment. According to this view, the mind starts as a clean slate and is shaped by sensory experiences and learning.

The significance of this theory lies in its implications for understanding human development, learning, and behavior, positing that environment and education play crucial roles in shaping an individual's thoughts and personality. This contrasts with other concepts, such as genetic predisposition, which asserts that individuals are born with certain innate qualities that influence their development. Unlike this, the blank slate theory underscores the importance of nurture over nature.

Operant conditioning and classical conditioning are both learning theories that explain how behaviors can be learned through reinforcement and association, respectively, but they do not directly address the idea of innate mental content. Therefore, the blank slate theory distinctly emphasizes the absence of built-in mental structures at birth.