Robert R. Hampton
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View article: Prospective and concurrent metamemory of familiarity and working memory by rhesus monkeys
Prospective and concurrent metamemory of familiarity and working memory by rhesus monkeys Open
Monkeys sometimes accurately predict their memory accuracy, a form of metamemory. The memory signals that support this ability may differ between memory systems and depend on when memory judgments are made. Working memory requires active m…
View article: Monkeys (Macaca mulatta) rank lists using multiple cognitive mechanisms simultaneously.
Monkeys (Macaca mulatta) rank lists using multiple cognitive mechanisms simultaneously. Open
Memorizing the relations between items and learning relational rules are two ways in which sets of items can be ranked. We investigated the interaction of these types of learning in a series of five experiments with six adult male rhesus m…
View article: Greater dependence on working memory and restricted familiarity in orangutans compared with rhesus monkeys
Greater dependence on working memory and restricted familiarity in orangutans compared with rhesus monkeys Open
The prefrontal cortex is larger than would be predicted by body size or visual cortex volume in great apes compared with monkeys. Because prefrontal cortex is critical for working memory, we hypothesized that recognition memory tests would…
View article: Preserved visual memory and relational cognition performance in monkeys with selective hippocampal lesions
Preserved visual memory and relational cognition performance in monkeys with selective hippocampal lesions Open
On a wide battery of cognitive tasks predicted to be hippocampally dependent, monkeys with hippocampal damage performed normally.
View article: Monkey Metacognition Could Generate More Insight
Monkey Metacognition Could Generate More Insight Open
Monkeys demonstrate metacognition by avoiding memory tests when they forget, seeking information when ignorant, and gambling sensibly after making judgments. Some of this metacognition appears to be based on introspection of private mental…
View article: Hippocampal damage attenuates habituation to videos in monkeys
Hippocampal damage attenuates habituation to videos in monkeys Open
Monkeys with selective damage to the hippocampus are often unimpaired in matching‐to‐sample tests but are reportedly impaired in visual paired comparison. While both tests assess recognition of previously seen images, delayed matching‐to‐s…
View article: Influences of demographic, seasonal, and social factors on automated touchscreen computer use by rhesus monkeys (Macaca mulatta) in a large naturalistic group
Influences of demographic, seasonal, and social factors on automated touchscreen computer use by rhesus monkeys (Macaca mulatta) in a large naturalistic group Open
Animals housed in naturalistic social groups with access to automated cognitive testing vary in whether and how much they participate in cognitive testing. Understanding how demographic, seasonal, and social factors relate to participation…
View article: Co-operation of long-term and working memory representations in simultaneous chaining by rhesus monkeys (<i>Macaca mulatta</i>)
Co-operation of long-term and working memory representations in simultaneous chaining by rhesus monkeys (<i>Macaca mulatta</i>) Open
We studied the memory representations that control execution of action sequences by training rhesus monkeys ( Macaca mulatta) to touch sets of five images in a predetermined arbitrary order (simultaneous chaining). In Experiment 1, we foun…
View article: Nonnavigational spatial memory performance is unaffected by hippocampal damage in monkeys
Nonnavigational spatial memory performance is unaffected by hippocampal damage in monkeys Open
Evidence that the hippocampus is critical for spatial memory in nonnavigational tests is mixed. A recent study reported that temporary hippocampal inactivation impaired spatial memory in the nonnavigational Hamilton Search Task in monkeys.…
View article: Rhesus monkeys metacognitively monitor memories of the order of events
Rhesus monkeys metacognitively monitor memories of the order of events Open
Human working memory is a capacity- and duration-limited system in which retention and manipulation of information is subject to metacognitive monitoring and control. At least some nonhuman animals appear to also monitor and control the co…
View article: Monkeys choose, but do not learn, through exclusion
Monkeys choose, but do not learn, through exclusion Open
Human children will select a novel object from among a group of known objects when presented with a novel object name. This disambiguation by exclusion may facilitate new name-object mappings and may play a role in the rapid word learning …