opposite effect; adverse effect; backfiring
having an immediate effect; taking immediate effect
exceptionally effective; overwhelming effectiveness
impact of publicity or propaganda
(positive) economic effect
(medicine with) a curative effect; (having) therapeutic value
butterfly effect (chaos theory)
visual effect(s) (e.g. in a film)
deterrent effect; chilling effect; restraining effect
ripple effect; spillover effect; propagation effect
effectiveness of advertising
Barnum effect; Forer effect
cost-effectiveness; price-performance ratio
Concorde fallacy; Concorde effect; sunk cost fallacy
customer appeal; the power to appeal to customers
stack effect; chimney effect
multiplier effect (econ.)
Mössbauer effect; recoilless nuclear resonance fluorescence
alienation effect; Verfremdungseffekt
Raman effect (of inelastic photon scattering)
fountain effect (theory that high sales in the basement of a department store lead to increased sales in the upper levels as well)
shower effect (theory that placing high-selling items on the upper floors of a department store will lead to increased sales in the lower floors)
Field Effect Transistor; FET
Edison effect (thermionic emission from a heated metal or semiconductor)
shear effect; shearing effect
Trump Effect; impact on business of the election of Donald Trump as US president
Polyanna principle; Polyanna effect
stuck song syndrome (esp. fragment of a song)