Object Skill is the kind of skill that helps humans and animals accelerate the speed of finding certain desirable objects, thereby reducing the reward delay in this process. Along with action skill, it is an essential component of any reward-directed skills.
Evolutionarily speaking, more rewards per unit time would mean better chance of survival and success to both humans and animals. In order to speed up reward-oriented behaviors and thereby maximizing rewards per unit time, humans and animals mainly rely on two mechanisms. They either boost up their motivation for certain behaviors or acquire skills of these behaviors. While motivation can be initiated quickly at presence of rewards and thus has an advantage of flexibility, it tends to fade away quickly without rewards. Skill, on the other hand, appears to be much more effective in reducing the duration of target behaviors[1] and has a stable effect even when no short-term reward is expected at all. This kind of reward-oriented skill is made up with two parts: finding an object and acting on it, the former being object skill and the latter action skill. Therefore, object skill is crucial in helping humans and animals maximizing their chance of survival and success.
Characteristics of object skilledit
Object skill is usually distinctly characterized by several features, including relatively stable internal value assignment, gaze and attention bias towards desired objects, automaticity of response towards desired objects, dependence on high-capacity memory and long-term nature of its effect.[2]
Stable internal value assignmentedit
In everyday life, people learn values of objects according to the corresponding rewarding or punishing results of choosing these objects. Their ability of finding good objects therefore depends on this kind of value-based learning,[3][4] where consistency plays an important role. As a result of this comparatively consistent object-value mapping across people's lifespan, their internal value assignment to objects tends to be stable.
Gaze and attention biasedit
Both humans and animals use senses across different modalities to find objects; however, humans mainly rely on visual information to identify objects. Studies have shown that gaze or attention shift to desired objects always precedes any possible manual action performed on these objects.[5][6][7] Remarkably, this gaze or attention shift occurs regardless of current intention of the initiator.[7] This automatic gaze or attention shift is pronounced even when no reward is expected, potentially increasing the subject's chance of survival in some critical circumstances.[2]
Automaticity of responseedit
Studies have shown that when humans have extensively learned to find some particular objects, they start to recruit much less cognitive resource in order to finish the task.[8][9] A study on monkeys with free-viewing procedure for testing gaze shift bias has also provided evidence to support the involuntary nature of object skill.[10] According to this study, monkeys neatly fixed their gazes only at objects with higher values learned in previous training.[10] This seems rather implausible to be accomplished through voluntary searching mechanism, given the limited space of working memory. On the other hand, faster responsivity of automatic search over voluntary search seems to be as well favored in terms of maximizing amount of reward per time unit. Thus, automaticity of response also plays a vital part in object skill.
Dependence on high-capacity memoryedit
Just like any other skills, two aspects of object skill matter most: accuracy and speed.[2] Accuracy is assured only if every memory-motor connection is unique, and speed is assured only if object-value information is quickly transmitted through memory-motor connections.[2] Under such scheme, high-capacity memory seems to be a necessity in response to demand for distinct memory slots for every object-value association.
Long-term nature of effectedit
Object skill also tends to have a long-term effect over object perception of both humans and monkeys. Results of several studies have shown that both humans and monkeys maintain their value-based gaze bias for a long time after the initial acquisition of such bias during training.[11] Another study on monkeys looked specifically at monkeys' response to objects very similar to ones associated with high values learned during training. The results showed that monkeys were highly responsive only to objects with high values as learned in the past, suggesting a highly object-selective object-value memory, which provides evidence for object skill's dependence of high-capacity memory.[11] And since high-capacity memory could be created only if each memory had been retained for a long time, it is now fairly clear that object skill could only be created slowly and would remain stable once created.[2]
Limitations of object skilledit
Due to its automatic and inflexible nature, object skill can be detrimental when changes happen. When values of objects change from positive to negative, quick motor response associated with object skill still occurs and might thus undermine the subject. Object skill also tends to account for the case of drug abuse, where abusers can't help but associate substances with high values as a result of their previous experience, even knowing the danger of abusing drugs.[12] One of the possible solutions involves recruiting another system that pays attention to changes in object values.[2] Such a system would be voluntary and slow, but the expense of maintaining this system could be compensated by avoiding potential costly dangers. The core issue then would be to figure out an optimal balance between relying on object skill and referring to local changes.
^Crossman, E.R.F.W. (1959). "A Theory of the Acquisition of Speed-Skill∗". Ergonomics. 2 (2): 153–166. doi:10.1080/00140135908930419.
^ abcdefHikosaka, Okihide; Shinya Yamamoto; Masaharu Yasuda; Hyoung H. Kim (2013). "Why skill matters". Trends in Cognitive Sciences. 17 (9): 434–441. doi:10.1016/j.tics.2013.07.001. PMC3756891. PMID 23911579.
^Gottlieb, Jacqueline (2012). "Attention, learning, and the value of information". Neuron. 76 (2): 281–295. doi:10.1016/j.neuron.2012.09.034. PMC3479649. PMID 23083732.
^Awh, Edward; Artem V. Belopolsky; Jan Theeuwes (2012). "Top-down versus bottom-up attentional control: a failed theoretical dichotomy". Trends in Cognitive Sciences. 16 (8): 437–443. doi:10.1016/j.tics.2012.06.010. PMC3426354. PMID 22795563.
^Theeuwes, Jan; Artem V. Belopolsky (2012). "Reward grabs the eye: Oculomotor capture by rewarding stimuli". Vision Research. 74: 80–85. doi:10.1016/j.visres.2012.07.024. PMID 22902641.
^ abHickey, Clayton; Leonardo Chelazzi; Jan Theeuwes (2010). "Reward Guides Vision when It's Your Thing: Trait Reward-Seeking in Reward-Mediated Visual Priming". PLOS ONE. 5 (11): e14087. Bibcode:2010PLoSO...514087H. doi:10.1371/journal.pone.0014087. PMC2990710. PMID 21124893.
^Shiffrin, Richard M.; Walter Schneide (1977). "Controlled and automatic human information processing: II. Perceptual learning, automatic attending and a general theory". Psychological Review. 84 (2): 127–190. doi:10.1037/0033-295x.84.2.127.
^Sigman, M.; Gilbert, C.D. (2000). "Learning to find a shape". Nature Neuroscience. 3 (3): 264–269. doi:10.1038/72979. PMID 10700259. S2CID 8966601.
^ abBerg, David; Boehnke, S. E.; Marino, R. A.; Munoz, D. P.; Itti, L. (2009). "Free viewing of dynamic stimuli by humans and monkeys". Journal of Vision. 9 (5): 19.1–15. doi:10.1167/9.5.19. PMID 19757897.
^ abYasuda, Masaharu; Shinya Yamamoto; Okihide Hikosaka (2012). "Robust Representation of Stable Object Values in the Oculomotor Basal Ganglia". The Journal of Neuroscience. 32 (47): 16917–16932. doi:10.1523/jneurosci.3438-12.2012. PMC3537824. PMID 23175843.
^Everitt, Barry J.; Trevor W. Robbins (2005). "Neural systems of reinforcement for drug addiction: from actions to habits to compulsion". Nature Neuroscience. 8 (11): 1481–1489. doi:10.1038/nn1579. PMID 16251991. S2CID 16941967.
January 01, 1970
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This article provides insufficient context for those unfamiliar with the subject Please help improve the article by providing more context for the reader November 2023 Learn how and when to remove this message Object Skill is the kind of skill that helps humans and animals accelerate the speed of finding certain desirable objects thereby reducing the reward delay in this process Along with action skill it is an essential component of any reward directed skills Contents 1 Value of object skill 2 Characteristics of object skill 2 1 Stable internal value assignment 2 2 Gaze and attention bias 2 3 Automaticity of response 2 4 Dependence on high capacity memory 2 5 Long term nature of effect 3 Limitations of object skill 4 See also 5 ReferencesValue of object skill editEvolutionarily speaking more rewards per unit time would mean better chance of survival and success to both humans and animals In order to speed up reward oriented behaviors and thereby maximizing rewards per unit time humans and animals mainly rely on two mechanisms They either boost up their motivation for certain behaviors or acquire skills of these behaviors While motivation can be initiated quickly at presence of rewards and thus has an advantage of flexibility it tends to fade away quickly without rewards Skill on the other hand appears to be much more effective in reducing the duration of target behaviors 1 and has a stable effect even when no short term reward is expected at all This kind of reward oriented skill is made up with two parts finding an object and acting on it the former being object skill and the latter action skill Therefore object skill is crucial in helping humans and animals maximizing their chance of survival and success Characteristics of object skill editObject skill is usually distinctly characterized by several features including relatively stable internal value assignment gaze and attention bias towards desired objects automaticity of response towards desired objects dependence on high capacity memory and long term nature of its effect 2 Stable internal value assignment edit In everyday life people learn values of objects according to the corresponding rewarding or punishing results of choosing these objects Their ability of finding good objects therefore depends on this kind of value based learning 3 4 where consistency plays an important role As a result of this comparatively consistent object value mapping across people s lifespan their internal value assignment to objects tends to be stable Gaze and attention bias edit Both humans and animals use senses across different modalities to find objects however humans mainly rely on visual information to identify objects Studies have shown that gaze or attention shift to desired objects always precedes any possible manual action performed on these objects 5 6 7 Remarkably this gaze or attention shift occurs regardless of current intention of the initiator 7 This automatic gaze or attention shift is pronounced even when no reward is expected potentially increasing the subject s chance of survival in some critical circumstances 2 Automaticity of response edit Studies have shown that when humans have extensively learned to find some particular objects they start to recruit much less cognitive resource in order to finish the task 8 9 A study on monkeys with free viewing procedure for testing gaze shift bias has also provided evidence to support the involuntary nature of object skill 10 According to this study monkeys neatly fixed their gazes only at objects with higher values learned in previous training 10 This seems rather implausible to be accomplished through voluntary searching mechanism given the limited space of working memory On the other hand faster responsivity of automatic search over voluntary search seems to be as well favored in terms of maximizing amount of reward per time unit Thus automaticity of response also plays a vital part in object skill Dependence on high capacity memory edit Just like any other skills two aspects of object skill matter most accuracy and speed 2 Accuracy is assured only if every memory motor connection is unique and speed is assured only if object value information is quickly transmitted through memory motor connections 2 Under such scheme high capacity memory seems to be a necessity in response to demand for distinct memory slots for every object value association Long term nature of effect edit Object skill also tends to have a long term effect over object perception of both humans and monkeys Results of several studies have shown that both humans and monkeys maintain their value based gaze bias for a long time after the initial acquisition of such bias during training 11 Another study on monkeys looked specifically at monkeys response to objects very similar to ones associated with high values learned during training The results showed that monkeys were highly responsive only to objects with high values as learned in the past suggesting a highly object selective object value memory which provides evidence for object skill s dependence of high capacity memory 11 And since high capacity memory could be created only if each memory had been retained for a long time it is now fairly clear that object skill could only be created slowly and would remain stable once created 2 Limitations of object skill editDue to its automatic and inflexible nature object skill can be detrimental when changes happen When values of objects change from positive to negative quick motor response associated with object skill still occurs and might thus undermine the subject Object skill also tends to account for the case of drug abuse where abusers can t help but associate substances with high values as a result of their previous experience even knowing the danger of abusing drugs 12 One of the possible solutions involves recruiting another system that pays attention to changes in object values 2 Such a system would be voluntary and slow but the expense of maintaining this system could be compensated by avoiding potential costly dangers The core issue then would be to figure out an optimal balance between relying on object skill and referring to local changes See also editAction selection Intelligent agentReferences edit Crossman E R F W 1959 A Theory of the Acquisition of Speed Skill Ergonomics 2 2 153 166 doi 10 1080 00140135908930419 a b c d e f Hikosaka Okihide Shinya Yamamoto Masaharu Yasuda Hyoung H Kim 2013 Why skill matters Trends in Cognitive Sciences 17 9 434 441 doi 10 1016 j tics 2013 07 001 PMC 3756891 PMID 23911579 Gottlieb Jacqueline 2012 Attention learning and the value of information Neuron 76 2 281 295 doi 10 1016 j neuron 2012 09 034 PMC 3479649 PMID 23083732 Awh Edward Artem V Belopolsky Jan Theeuwes 2012 Top down versus bottom up attentional control a failed theoretical dichotomy Trends in Cognitive Sciences 16 8 437 443 doi 10 1016 j tics 2012 06 010 PMC 3426354 PMID 22795563 Hikosaka Okihide Kae Nakamura Hiroyuki Nakahara 2006 Basal ganglia orient eyes to reward Journal of Neurophysiology 95 2 567 584 doi 10 1152 jn 00458 2005 PMID 16424448 Theeuwes Jan Artem V Belopolsky 2012 Reward grabs the eye Oculomotor capture by rewarding stimuli Vision Research 74 80 85 doi 10 1016 j visres 2012 07 024 PMID 22902641 a b Hickey Clayton Leonardo Chelazzi Jan Theeuwes 2010 Reward Guides Vision when It s Your Thing Trait Reward Seeking in Reward Mediated Visual Priming PLOS ONE 5 11 e14087 Bibcode 2010PLoSO 514087H doi 10 1371 journal pone 0014087 PMC 2990710 PMID 21124893 Shiffrin Richard M Walter Schneide 1977 Controlled and automatic human information processing II Perceptual learning automatic attending and a general theory Psychological Review 84 2 127 190 doi 10 1037 0033 295x 84 2 127 Sigman M Gilbert C D 2000 Learning to find a shape Nature Neuroscience 3 3 264 269 doi 10 1038 72979 PMID 10700259 S2CID 8966601 a b Berg David Boehnke S E Marino R A Munoz D P Itti L 2009 Free viewing of dynamic stimuli by humans and monkeys Journal of Vision 9 5 19 1 15 doi 10 1167 9 5 19 PMID 19757897 a b Yasuda Masaharu Shinya Yamamoto Okihide Hikosaka 2012 Robust Representation of Stable Object Values in the Oculomotor Basal Ganglia The Journal of Neuroscience 32 47 16917 16932 doi 10 1523 jneurosci 3438 12 2012 PMC 3537824 PMID 23175843 Everitt Barry J Trevor W Robbins 2005 Neural systems of reinforcement for drug addiction from actions to habits to compulsion Nature Neuroscience 8 11 1481 1489 doi 10 1038 nn1579 PMID 16251991 S2CID 16941967 Retrieved from https en wikipedia org w index php title Object skill amp oldid 1223271313, wikipedia, wiki, book, books, library,
