Coddington (1976) classifies the IS-LM model as part of:

[1]Fundamentalist Keynesianism since it is a rejection of the reductionist program.

[2]Hydraulic Keynesianism since it embodies the idea that there are stable relationships between macroeconomic flows.

[3]Reconstituted reductionism since it abandons equilibrium theorizing.

[4]Hydraulic Keynesianism since it explains inflexible wages and prices as part of rational behaviour.

[5]Fundamentalist Keynesianism since it incorporates rational expectations.