"My history includes both the Keller (and Schoenfeld) and Skinner

lineages.  I took Keller's introductory psychology course at Columbia

(using the Keller and Schoenfeld textbook) and then Schoenfeld's

experimental psych sequence (one text of which was Skinner's "Behavior

of Organisms."  I took both BA and MA degrees at Columbia, and then

became a graduate student and later a post doc at Harvard, where I was

a student of Skinner's and later ran his pigeon lab.

Given their close association in the Keller & Schoenfeld book and the

fact that most of those at Columbia took course work with Keller but

actually did research with Schoenfeld, I think it would be unfortunate

to omit Schoenfeld from your ancestry table.  I loved Fred Keller's

introductory course and he was a marvelous teacher, but I owe my

greatest intellectual debt to Nat Schoenfeld."