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Acquisition and retention scores of experiments 9–14 (called different groups in Table 1). (A) Overall acquisition scores of the massed- and spaced-conditioned groups. (B) Overall retention scores of the massed- and spaced-conditioned groups at the early LTM interval (1 and 2 d after conditioning). (C) Overall retention scores of the massed- and spaced-conditioned groups at the late LTM interval (3 and 4 d after conditioning).
