The forgetting curve is one of the most well known and established findings in memory research. Knowing the pattern of memory change over time can provide insight into underlying cognitive mechanisms. The default understanding is that forgetting follows a continuous, negatively accelerating function, such as a power function. We show that this…

Our aim in the current study was to examine how different diary methods might impact the results of involuntary memory studies. We compared three different commonly used diary methods, record all memories experienced per day, record up to two memories per day, or record only the first two per day. Results showed that the record-all group had the…

In many non-human species, learning retention decreases temporarily following training. This has led to the suggestion that these lapses reflect a fundamental component of memory formation. If so, transient memory lapses should also be prevalent in humans, and should occur for all types of learning. In line with these predictions, we report two…

When memories are reactivated during sleep, they are potentially transformed and strengthened. However, disturbed sleep may make this process ineffective. In a prior study, memories formed shortly before sleep were weakened by auditory stimulation when that stimulation provoked memory reactivation while also disrupting sleep -- a procedure known…

Retention is the ability to retain information in the mind, either in short-term or long-term memory. Memory in the long-term is more ideal. Thus, this has become a challenge for educators on how to transfer ideas in short-term memory to long-term memory. To concretize the effect of time on mathematics learning retention, a randomized pre-test…

The production effect is a well-established finding: If some words within a list are read aloud, that is, produced, they are better remembered than their silently read neighbors. The effect has been extensively studied with long-term memory tasks. Recently, using immediate serial recall and short-term order reconstruction, Saint-Aubin et al.…

The various ways in which forgetting, an inherent component of the human memory process, occurs are essential for understanding cognitive function and memory control. This paper investigates the main categories of forgetting, including retrieval failure, decay, interference, motivated or conscious forgetting, and encoding failures. Retrieval…

When administering an in-class exam, a common decision that confronts every instructor is whether the exam format should be closed book or open book. The present review synthesizes research examining the effect of administering closed-book or open-book assessments on long-term learning. Although the overall effect of assessment format on learning…

Value-directed remembering refers to the tendency to best remember important information at the expense of less valuable information, and this ability may draw on strategic attentional processes. In six experiments, we investigated the role of attention in value-directed remembering by examining memory for important information under conditions of…

The debate about whether the capacity of working memory (WM) varies with the complexity of memory items continues. This study employed novel experimental materials to investigate the role of complexity in WM capacity. Across seven experiments, we explored the relationship between complexity and WM capacity. The results indicated that the…

Free time in a working memory task often improves the recall performances of the to-be-remembered items. It is still debated whether the free-time effect in working memory is purely proactive, purely retroactive, or both proactive and retroactive. In the present study, we used the single-gap paradigm to explore this question. In Experiment 1, we…

Retrieval practice is a learning technique that is known to produce enhanced long-term memory retention when compared to several other techniques. This difference in learning outcome is commonly called "the testing effect". Yet there is little research on how individual differences in personality traits and working memory capacity…

One model of numeric perception is a density-area mechanism: a process that estimates both density and area of an array, then multiplies them to create an estimate of number. One line of evidence that supports this is the surprising numeric Ebbinghaus illusion: smaller context circles lead to greater perceived number than larger context circles,…

Retrieval practice is an effective strategy to promote long-term retention and learning, but students do not always use it in the most effective ways. Applying various intervention design principles that leverage sociomotivational research, we created an intervention targeted not only at teaching students about the efficacy of retrieval practice,…

Proactive interference (PI) occurs when previously learned memories compete with currently relevant information. Despite extensive literature investigating the effect in adults, little work has been done in young children. In three preregistered studies (N = 38, 35, 172; convenience samples from the Northeastern United States), first, we showed…