scholarly journals Light, Sleep and Performance in Diurnal Birds

2021 ◽  
Vol 3 (1) ◽  
pp. 115-131
Author(s):  
Anne E. Aulsebrook ◽  
Robin D. Johnsson ◽  
John A. Lesku
Keyword(s):  
Urban Ecology ◽  
Cognitive Performance ◽  
Early Development ◽  
Optimal Performance ◽  
Artificial Light ◽  
Subsequent Performance ◽  
Adaptive Value ◽  
And Performance ◽  
Underlying Mechanisms ◽  
Light Sleep

Sleep has a multitude of benefits and is generally considered necessary for optimal performance. Disruption of sleep by extended photoperiods, moonlight and artificial light could therefore impair performance in humans and non-human animals alike. Here, we review the evidence for effects of light on sleep and subsequent performance in birds. There is accumulating evidence that exposure to natural and artificial sources of light regulates and suppresses sleep in diurnal birds. Sleep also benefits avian cognitive performance, including during early development. Nevertheless, multiple studies suggest that light can prolong wakefulness in birds without impairing performance. Although there is still limited research on this topic, these results raise intriguing questions about the adaptive value of sleep. Further research into the links between light, sleep and performance, including the underlying mechanisms and consequences for fitness, could shed new light on sleep evolution and urban ecology.

scholarly journals Empathetic Factors and Influences on Physical Performance: A Topical Review

2021 ◽  
Vol 12 ◽  
Author(s):  
David G. Behm ◽  
Tori B. Carter
Keyword(s):  
Physical Performance ◽  
Mirror Neurons ◽  
Exercise Science ◽  
Subsequent Performance ◽  
Topical Review ◽  
Competition Hypothesis ◽  
And Performance ◽  
Sport And Exercise ◽  
Underlying Mechanisms

Performance is dependent upon both physical and psychological factors. As a social animal, human behaviors are influenced by interactions with others. Empathy is based on social interactions and is defined as the understanding, awareness of, sensitivity to, and ability to vicariously experience the feelings, thoughts, and experience of another. There are few investigations on the influence of empathy in relation to individual and team performance and activity. There is some initial research suggesting that observing sad photos or videos or fatiguing exercise can adversely affect subsequent performance. Possible mechanisms may be attributed to mirror neurons or the affordance competition hypothesis. The relative degree of empathetic influences can be modulated by sex, age, personal familiarity, cultures and other factors. With the limited research in sport and exercise science, there is a need for more research to investigate the role of empathy on individual and team performances. The objective of this topical review was to examine the possible effects of empathy on physical performance, the potential underlying mechanisms and influencing variables moderating the association between empathy and performance?

STEREOTYPE THREAT AND STEREOTYPE LIFT: THE CASE OF 10 YEAR OLD GIRLS AND BOYS

2016 ◽  
Vol 12 (4) ◽  
pp. 21-32
Author(s):  
Anna Kwiatkowska ◽  
Małgorzata Mróz
Keyword(s):  
Stereotype Threat ◽  
Cognitive Performance ◽  
Significant Interaction ◽  
Self Esteem ◽  
The Self ◽  
Experimental Conditions ◽  
Significant Interaction Effect ◽  
Significant Drop ◽  
Stereotype Lift ◽  
And Performance

The aim of this study was to examine the effects of stereotypical and counter-stereotypicalinformation on the self-esteem and cognitive performance of 10-year-old children. Our sampleconsisted of 37 girls and 37 boys. Children were presented with 10 “mathematical” puzzles in threeexperimental conditions: stereotypical (boys are better), counter-stereotypical (girls are better), andthe control condition (no particular information). Self-esteem was measured using a non-verbaltask. The results showed a significant interaction effect of “condition x sex” on self-esteem andperformance. Girls revealed no significant differences between control and experimental conditions,while boys showed a significant drop in self-esteem and performance in the counter-stereotypicalcondition as compared to the control condition and a significant lift in self-esteem and performancein the stereotypical condition as compared to the control condition.

scholarly journals Parasites—the new frontier: celebrating Darwin 200

2009 ◽  
Vol 5 (5) ◽  
pp. 625-627 ◽  
Author(s):  
Paul Schmid-Hempel
Keyword(s):  
Population Biology ◽  
Life Histories ◽  
Evolutionary Ecology ◽  
Adaptive Value ◽  
Wide Range ◽  
New Frontier ◽  
Underlying Mechanisms ◽  
The One ◽  
Immune Defences ◽  
Recurrent Theme

To Darwin, parasites were fascinating examples of adaptation but their significance as selective factors for a wide range of phenomena has only been studied in depth over the last few decades. This work has had its roots in behavioural/evolutionary ecology on the one hand, and in population biology/ecology on the other, thus shaping a new comprehensive field of ‘evolutionary parasitology’. Taking parasites into account has been a success story and has shed new light on several old questions such as sexual selection, the evolution of sex and recombination, changes in behaviour, adaptive life histories, and so forth. In the process, the topic of ecological immunology has emerged, which analyses immune defences in a framework of costs and benefits. Throughout, a recurrent theme is how to appropriately integrate the underlying mechanisms as evolved boundary conditions into a framework of studying the adaptive value of traits. On the conceptual side, major questions remain and await further study.

Anxiety, Processing Efficiency, and Cognitive Performance

2009 ◽  
Vol 14 (2) ◽  
pp. 168-176 ◽  
Author(s):  
Nazanin Derakshan ◽  
Michael W. Eysenck
Keyword(s):  
Control Theory ◽  
Cognitive Performance ◽  
Attentional Control ◽  
Processing Efficiency ◽  
Performance Effectiveness ◽  
Theoretical Predictions ◽  
Attentional Control Theory ◽  
Efficiency Theory ◽  
And Performance ◽  
Switching Attention

There have been many attempts to account theoretically for the effects of anxiety on cognitive performance. This article focuses on two theories based on insights from cognitive psychology. The more recent is the attentional control theory ( Eysenck, Derakshan, Santos, & Calvo, 2007 ), which developed from the earlier processing efficiency theory ( Eysenck & Calvo, 1992 ). Both theories assume there is a fundamental distinction between performance effectiveness (quality of performance) and processing efficiency (the relationship between performance effectiveness and use of processing resources), and that anxiety impairs processing efficiency more than performance effectiveness. Both theories also assume that anxiety impairs the efficiency of the central executive component of the working memory system. In addition, attentional control theory assumes that anxiety impairs the efficiency of two types of attentional control: (1) negative attentional control (involved in inhibiting attention to task-irrelevant stimuli); and (2) positive attentional control (involved in flexibly switching attention between and within tasks to maximize performance). Recent (including unpublished) research relevant to theoretical predictions from attentional control theory is discussed. In addition, future directions for theory and research in the area of anxiety and performance are presented.

scholarly journals Remuneration and Performance

2020 ◽  
Vol 86 ◽  
pp. 01034
Author(s):  
Iriani Ismail
Keyword(s):  
High Performance ◽  
Qualitative Method ◽  
Optimal Performance ◽  
External Factors ◽  
Interactive Analysis ◽  
Analysis Methods ◽  
Depth Interview ◽  
And Performance ◽  
Internal And External Factors

The aim of this study is to explain the role of remuneration in improving the performance of library employees. This study uses the qualitative method which the population is all employees numbering 17 people. Based on interactive analysis methods and ethnographic techniques, its took In-depth interview and observations. Using this analysis, the result showed that the remuneration has an important role in improving employees performance. Some internal and external factors influence it so that optimal performance is obtained. Generally, employees expect that the remuneration has been high to be accepted like as expected. Most employees demands such remuneration to meet their daily needs. External factors also has a strong role so the employees demand high, but not balanced with high performance.

scholarly journals Relationship between Brazilian Thoroughbred race horses performance and lay-up period after osseous thoracic limb diseases

2013 ◽  
Vol 43 (7) ◽  
pp. 1288-1293
Author(s):  
Marsel de Carvalho Pereira ◽  
Carlos Augusto Araújo Valadão ◽  
Antonio Sergio Ferraudo ◽  
Carolina Berkman ◽  
Guilherme de Camargo Ferraz ◽  
...  
Keyword(s):  
Bone Repair ◽  
Healing Process ◽  
Post Injury ◽  
Injury Rehabilitation ◽  
Subsequent Performance ◽  
Perceptual Maps ◽  
Before And After ◽  
Performance Decline ◽  
History Of ◽  
And Performance

It is well established in the literature that musculoskeletal injuries are important compromising agents in the performance of Thoroughbred horses. In Brazil, there are no studies on the interrelation between lay-up period post-injury and retirement of racehorses due to musculoskeletal injures. The aim of this study is to determine the relationship between rehabilitation times of track injures and variables of prior race performance and later return to competitions. The radiographic reports and athletic history of 416 thoroughbreds during the period between 2003 and 2006 were examined; they were selected based on continued presentations after injury diagnosis. The temporal variables (post-injury rehabilitation time) and performance variables (race score before and after injury) were evaluated by multivariate correspondence analysis of the data and represented in perceptual maps. Correspondence was observed between most of the animals that had a short lay-up post-injury and variables that denote decline in subsequent performance. Considering the integrity of the bone healing process as crucial for the horse to be able to handle later training routines and competitions, shortening this period could lead to an imbalance of the bone repair metabolism, thus resulting in performance decline and compromise of the horse athletic career.

Tubular Daylighting Devices and People: A comparison of the human responses to Tubular Daylighting Devices and fluorescent lighting

2021 ◽  
Author(s):  
◽  
James Sullivan
Keyword(s):  
Cognitive Performance ◽  
Well Being ◽  
Performance Change ◽  
Performance Effects ◽  
Before And After ◽  
And Performance ◽  
The University ◽  
Fluorescent Lighting ◽  
Larger Sample ◽  
Before And After Study

<p>Tubular Daylighting Devices are used to bring daylight into deep-plan spaces, and meet sustainability goals. However, they are expensive, and justification for their use lies in hypothesised benefits they can provide in areas such as well-being and productivity. Yet, there is very little research into the effects of Tubular Daylighting Devices. The broader daylighting literature suggests that benefits to satisfaction, mood, and performance are possible — though research into the benefits of daylight is still not conclusive.  Therefore, a before and after study was carried out in a windowless computer room in the university to compare how the students responded under TDDs versus typical electric lighting. Their cognitive performance, change in mood, average sleepiness, and perceptions of the room and lighting were measured.  TDDs significantly increased ratings of room attractiveness and brightness, and had no more perceived glare than the electric lighting. Ratings of lighting quality were on a par with both typical electric lighting and good modern lighting. They were also just as effective on overcast days as sunny. No effects were found on performance or sleepiness, and mood results were inconclusive.  Overall, it is suggested that TDDs can be considered to be on a par with good modern lighting, and superior to typical existing lighting. Note, however, that it is possible that effects in rooms with windows could differ from those found here. Further research should use longer exposures and larger sample sizes if they wish to find performance effects.</p>

Observations of Cattle Hoof Health and Performance Over Time in Deep Bedded Monoslope Buildings

2021 ◽  
Author(s):  
Garland R. Dahlke
Keyword(s):  
Feedlot Cattle ◽  
Foot Health ◽  
Subsequent Performance ◽  
And Performance ◽  
Over Time

The use of deep bedded, monoslope, cattle barns without complete manure removal can have negative implications regarding foot health and subsequent performance of feedlot cattle over time.&nbsp; More frequent manure removal may be part of the solution.

Examining the effects of musical type and intensity in performing the flanker task: A test of attentional control theory applied to non-emotional distractions

2020 ◽  
pp. 030573562092259
Author(s):  
Michael D Oliver ◽  
Jacob J Levy ◽  
Debora R Baldwin
Keyword(s):  
Control Theory ◽  
Cognitive Performance ◽  
Attentional Control ◽  
Flanker Task ◽  
Sound Intensity ◽  
Poor Performance ◽  
Relevant Information ◽  
Processing Efficiency ◽  
Attentional Control Theory ◽  
And Performance

Music alters the interplay between components of cognition and performance; however, there are inconclusive findings on how. One explanation may be Attentional Control Theory, which states that anxiety places demands on cognitive resources producing adverse effects on cognitive performance. Similarly, characteristics of music alter cognitive faculties resulting in poor performance. Therefore, the current study aimed to investigate effects on cognition specific to influences of music through the lens of Attentional Control Theory. In an attempt to explain how music impacts cognitive performance, we asked 141 college students (63.1% female) to complete the flanker task while listening to either lyrical or non-lyrical music at differing sound intensities. Results revealed a significant main effect of music type on flanker performance; however, no significant differences emerged with sound intensity. Findings suggest music with lyrics, rather than intensity, impairs cognition in adults, thereby elucidating the importance of avoiding music with lyrics during active tasks. Moreover, musical lyrics worsen performance by either interfering with selective attention processing of goal-relevant information or altering working memory capacity resulting in decreases in processing efficiency and performance effectiveness. Therefore, findings support the use of attentional control theory as a means of explaining differences in cognitive performance due to characteristics of music.

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