Who developed the interaction analysis category system in education for increasing the teacher's effectiveness?

Ned Flanders developed the Interaction Analysis Category System to raise teacher effectiveness.

Rayon (B) is not associated with this system.

Amidon and Simon (C) worked on classroom interaction but did not originate this category system.

Richard Over (D) is unconnected with interaction analysis.

Flanders' system codes classroom talk into ten categories of teacher talk, student talk and silence.

It is known as FIACS, the Flanders' Interaction Analysis Category System.