Cognitive efficiency and circadian typologies: a diurnal study

Natale, Vincenzo; Alzani, Antonella; Cicogna, Piera Carla

doi:10.1016/s0191-8869(02)00320-3

Cited by 81 publications

(43 citation statements)

References 29 publications

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“…16 The morningness-eveningness (ME) preference explains the variation in the rhythmic expression of biological and behavioral patterns as a continuum between evening chronotypes (E-types) and morning chronotypes (M-types). [17][18][19] The types of circadian preference are intrinsic and heritable characteristics of the individual associated with differences in habits, performance rhythms, physiological, and behavioral variables. 20 According to the literature, M-type individuals wake up early in the morning, fall asleep at an early hour and prefer early morning activities, while E-types seem to have problems waking up in the morning (e.g., need to be waked up by parents), 20,21 staying awake during the day (especially during school time), and feeling more exhausted during the day.…”

Section: Brief Summarymentioning

confidence: 99%

Technology Use and Sleep Quality in Preadolescence and Adolescence

Bruni

Sette

Fontanesi

et al. 2015

Journal of Clinical Sleep Medicine

168

107

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Study Objectives: The purpose of this study was to analyze differences between preadolescents and adolescents on the use of technology and to test the contribution of using Internet and mobile phone, and circadian preference on sleep quality. Methods: We recruited a sample of 850 (364 males) preadolescents and adolescents. Self-report questionnaires about sleep schedule, sleep wake behavior problems, circadian preferences, and the use of technology (e.g., Internet and mobile phone) were administered. Students were asked to fi ll out the School Sleep Habits Survey, a self-report questionnaire on the use of technology, the Mobile Phone Involvement Questionnaire (MPIQ), and the Shorter Promis Questionnaire (SPQ). Results: Adolescents reported more sleep problems, a tendency toward eveningness, and an increase of Internet and phone activities, as well as social network activities, while preadolescents were more involved in gaming console and television viewing. The regression analysis performed separately in the two age groups showed that sleep quality was affected by the circadian preference (eveningness) in both groups. Adolescents' bad sleep quality was consistently associated with the mobile phone use and number of devices in the bedroom, while in preadolescents, with Internet use and turning-off time. Conclusions

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Section: Brief Summarymentioning

confidence: 99%

Technology Use and Sleep Quality in Preadolescence and Adolescence

Bruni

Sette

Fontanesi

et al. 2015

Journal of Clinical Sleep Medicine

168

107

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“…Studies that used memory tasks with a short retention interval have shown a so-called synchronic effect, which consists of better performance when subjects of a determinant chronotype perform the task at their optimal time-ofday (13)(14)(15)(16)). An important implication of these chronotype studies is that perhaps the training time-of-day effect on long-term explicit memory reported by Folkard et al (4) may have been, in fact, a consequence of the sample that was used.…”

Section: Introductionmentioning

confidence: 99%

Effect of the time-of-day of training on explicit memory

Barbosa

Albuquerque

2008

Braz J Med Biol Res

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Studies have shown a time-of-day of training effect on long-term explicit memory with a greater effect being shown in the afternoon than in the morning. However, these studies did not control the chronotype variable. Therefore, the purpose of this study was to assess if the time-of-day effect on explicit memory would continue if this variable were controlled, in addition to identifying the occurrence of a possible synchronic effect. A total of 68 undergraduates were classified as morning, intermediate, or afternoon types. The subjects listened to a list of 10 words during the training phase and immediately performed a recognition task, a procedure which they repeated twice. One week later, they underwent an unannounced recognition test. The target list and the distractor words were the same in all series. The subjects were allocated to two groups according to acquisition time: a morning group (N = 32), and an afternoon group (N = 36). One week later, some of the subjects in each of these groups were subjected to a test in the morning (N = 35) or in the afternoon (N = 33). The groups had similar chronotypes. Long-term explicit memory performance was not affected by test time-of-day or by chronotype. However, there was a training time-of-day effect [F (1,56) = 53.667; P = 0.009] with better performance for those who trained in the afternoon. Our data indicated that the advantage of training in the afternoon for long-term memory performance does not depend on chronotype and also that this performance is not affected by the synchronic effect.

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“…Cognitive efficiency may be evaluated with greater accuracy if circadian typology is taken into account (Natale et al 2003). Subjects are grouped into morning-, intermediate-and evening-types on the basis of their self-assessed preferences in circadian questionnaires (Horne & Ö stberg 1976;Smith et al 1989), the reliability and accuracy of which have been proven on both physiological and psychological grounds (Kerkhof 1985, Tankova et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Prospective time estimation over a night without sleep

Esposito

Natale

Martoni

et al. 2007

Biological Rhythm Research

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The aim of the present study was to investigate the time of night effect on prospective time estimation efficiency. Fifty-four participants took part in six consecutive experimental sessions from 10:00 p.m. to 8:00 a.m. at intervals of 2 h, during which they had to carry out two kinds of tasks (simple reaction time and prospective time estimation), give an evaluation of their subjective alertness, and record body temperature. In agreement with previous data on body temperature, subjective alertness and performance in simple reaction time showed a significant decrease during the night, while performance in prospective time estimation did not change over the night. Taking into account circadian typology we found that morning-types tended to produce significantly shorter time intervals and less time estimation accuracy than evening-types. With reference to recent cognitive timing models and data derived from free-running conditions, it is hypothesised that internal pace-makers pulse at different rates between the extreme chronotypes.

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Cognitive efficiency and circadian typologies: a diurnal study

Cited by 81 publications

References 29 publications

Technology Use and Sleep Quality in Preadolescence and Adolescence

Technology Use and Sleep Quality in Preadolescence and Adolescence

Effect of the time-of-day of training on explicit memory

Prospective time estimation over a night without sleep

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