Some historical and conceptual relations among logical positivism, operationism, and behaviorism.

Pear (1985) traced the family tree of behaviorism. The paper looked at how two big ideas—logical positivism and operationism—shaped early behaviorists. It then showed how Skinner stepped away from those ideas to build radical behaviorism.

The goal was to explain why Skinner rejected mental talk and built a new path.

The study found that Skinner broke ranks with the positivist crew. He saw that strict operationism and logical positivism could trap behaviorists inside mentalistic language.

By walking away, Skinner kept the field focused on observable environment–behavior links.

Emerson (2003) extends this story. It hands you three practical tools—translate, replace, treat first-person talk as verbal behavior—that show how Skinner’s break works day-to-day.

Abbott (2013) offers a conceptual replication. It repeats Skinner’s 1945 warning: stop fighting over definitions and study the contingencies that shape how we use words like ‘mand’ or ‘MO.’

Hansen et al. (1989) flips the lens. Where Pear (1985) shows history pushing Skinner, the 1989 paper shows Skinner pushing back—using verbal behavior to reinterpret logic itself.

Knowing the history keeps you from slipping back into mentalism. When you hear ‘He did it because he wanted attention,’ recall Skinner’s exit ramp: look for the environmental history that reinforced that response. The paper reminds you that radical behaviorism is a choice to stay outside the mind-body maze and inside the data.