Meier Beat, Zimmermann Thomas D
Institute of Psychology and Center for Cognition, Learning and Memory, University of Bern Bern, Switzerland.
Front Hum Neurosci. 2015 Jun 2;9:322. doi: 10.3389/fnhum.2015.00322. eCollection 2015.
In prospective memory tasks different kinds of load can occur. Adding a prospective memory task can impose a load on ongoing task performance. Adding ongoing task load (OTL) can affect prospective memory performance. The existence of multiple target events increases prospective load (PL) and adding complexity to the to-be-remembered action increases retrospective load (RL). In two experiments, we systematically examined the effects of these different types of load on prospective memory performance. Results showed an effect of PL on costs in the ongoing task for categorical targets (Experiment 2), but not for specific targets (Experiment 1). RL and OTL both affected remembering the retrospective component of the prospective memory task. We suggest that PL can enhance costs in the ongoing task due to additional monitoring requirements. RL and OTL seem to impact the division of resources between the ongoing task and retrieval of the retrospective component, which may affect disengagement from the ongoing task. In general, the results demonstrate that the different types of load affect prospective memory differentially.
在前瞻性记忆任务中,可能会出现不同类型的负荷。添加一个前瞻性记忆任务会给正在进行的任务表现带来负荷。增加正在进行的任务负荷(OTL)会影响前瞻性记忆表现。多个目标事件的存在会增加前瞻性负荷(PL),而增加要记住的动作的复杂性会增加回溯性负荷(RL)。在两项实验中,我们系统地研究了这些不同类型的负荷对前瞻性记忆表现的影响。结果表明,PL对分类目标的正在进行任务中的代价有影响(实验2),但对特定目标没有影响(实验1)。RL和OTL都影响了对前瞻性记忆任务回溯部分的记忆。我们认为,由于额外的监测要求,PL会增加正在进行任务中的代价。RL和OTL似乎会影响正在进行的任务与回溯部分检索之间的资源分配,这可能会影响从正在进行的任务中脱离。总体而言,结果表明不同类型的负荷对前瞻性记忆的影响各不相同。