| Sumario: | A study consisting of three experiments was conducted to investigate implicit- and explicit-memory phenomena. In the first experiment, third graders were given implicit- and explicit-memory tests with picture stimuli immediately, 48 hours, one week, and six months after the initial presentation. Results revealed that explicit memories declined as expected and that implicit memories demonstrated hypermnesia by improving significantly from immediate testing at the 48-hour retention interval. When this outcome was examined in the second experiment using college students, significant improvements in implicit-memory performance at the short interval were found, with the source of this effect being a reduction in control items reported. In the third experiment, the issue of whether short retention intervals produce implicit memory for pictures was further examined, and priming was found to be elevated for up to five days following presentation.
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