Changes in memory can occur as a result of specific influences that operate after a memory is first formed. In a classic experiment, researchers showed subjects a filmed traffic accident. Afterwards some subjects were asked to estimate the speed of collision when the cars "smashed together". Other subjects were asked to estimate the speed when the cars "hit each other". Subjects queried using the term "smashed together" not only gave higher speed estimates, but on specific inquiry also more often recalled broken glass despite the fact that no broken glass was present in the film. What name has been given to this phenomenon?