通过4个实验，考察粤-普双言者与普通话单言者周期性时间推理的差异。实验1和2表明，无论时间以5为单位、不以5为单位还是以“字”为单位，双言者反应时均显著长。实验3和4表明，当时间为以5为单位时，双言者与单言者均采用数字加工方式；当材料以“字”为单位时，双言者采用空间表象加工方式。

This study compared the differences between Cantonese–Mandarin diglossia speakers and Mandarin speakers about temporal reasoning. Experiment 1 and 2 showed that whether the materials is "not to five as a unit," "5 as a unit" or "character as a unit," the reaction time of Cantonese–Mandarin diglossia speakers was longer than Mandarin speakers. The experiment 3 and 4 indicated that both Cantonese–Mandarin diglossia speakers and Mandarin speakers adopted number processing in time reasoning when the materials was "5 as a unit", but to the materials of “‘character’as a unit”, Cantonese–Mandarin diglossia speakers adopted image processing.The differences of temporal reasoning between Cantonese–Mandarin diglossia speakers and Mandarin speakers can be explained by the Weaker Links Hypothesis.