| Change | Interest rate? | Income? | Investment? | Remarks |
| A rise in the propensity to consume→ | Increase (theorem 4) | Increase (theorem 3) | ambiguous |
|
| A rise in the Marginal efficiency of Capital→ | Increase (theorem 1) | Increase (theorem 2) | Positive→ | presumptive |
| More money→ | Reduction (theorem 6) ceteris paribus | Increase (theorem 7) (*) | Increase (theorem 8) (*) | Interest rate constant; the MPC** plus MPI*** < 1 (theorem 5) |
| Rise in the marginal efficiency schedule→ |
|
| Increase (theorem 9) (*) | Given a change in INS (Savings) vis-à-vis interest rate |