Christoph Randler

Summary

Affiliation: University of Education
Country: Germany

Publications

  1. doi request reprint Differences in sleep and circadian preference between Eastern and Western German adolescents
    Christoph Randler
    Department of Biology, Pharmacy and Psychology, Institute of Biology I, University of Leipzig, Leipzig, Germany
    Chronobiol Int 25:565-75. 2008
  2. doi request reprint Association between morningness-eveningness and mental and physical health in adolescents
    Christoph Randler
    Institute of Natural Sciences and Technology, University of Education Heidelberg, Heidelberg, Germany
    Psychol Health Med 16:29-38. 2011
  3. doi request reprint Asymmetries in commitment in an avian communication network
    Christoph Randler
    Department of Biology, University of Education Heidelberg, Im Neuenheimer Feld 561 2, 69120, Heidelberg, Germany
    Naturwissenschaften 100:199-203. 2013
  4. doi request reprint Chronotype but not sleep length is related to salivary testosterone in young adult men
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561 2, 69120 Heidelberg, Germany
    Psychoneuroendocrinology 37:1740-4. 2012
  5. doi request reprint Assortative mating in morningness-eveningness
    Christoph Randler
    University of Education Heidelberg, Germany
    Int J Psychol 46:91-6. 2011
  6. ncbi request reprint Age and gender differences in morningness-eveningness during adolescence
    Christoph Randler
    University of Education Heidelberg, Department of Natural Sciences, Heidelberg, Germany
    J Genet Psychol 172:302-8. 2011
  7. doi request reprint Foot preferences in wild-living ring-necked parakeets (Psittacula krameri, Psittacidae)
    Christoph Randler
    University of Education Heidelberg, Germany
    Laterality 16:201-6. 2011
  8. doi request reprint Morningness-eveningness, habitual sleep-wake variables and cortisol level
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561, Heidelberg, Germany
    Biol Psychol 85:14-8. 2010
  9. doi request reprint Associations among sleep, chronotype, parental monitoring, and pubertal development among German adolescents
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561 2 D 69120, Heidelberg, Germany
    J Psychol 143:509-20. 2009
  10. doi request reprint In sync with the family: children and partners influence the sleep-wake circadian rhythm and social habits of women
    Catherine Leonhard
    University of Education Heidelberg, Heidelberg, Germany
    Chronobiol Int 26:510-25. 2009

Collaborators

Detail Information

Publications17

  1. doi request reprint Differences in sleep and circadian preference between Eastern and Western German adolescents
    Christoph Randler
    Department of Biology, Pharmacy and Psychology, Institute of Biology I, University of Leipzig, Leipzig, Germany
    Chronobiol Int 25:565-75. 2008
    ..The finding of earlier rise and bed times of the East German pupils is consistent with the hypothesis that sunlight acts as the entrainment for the biological clock of adolescents, as sunrise is earlier in Eastern Germany...
  2. doi request reprint Association between morningness-eveningness and mental and physical health in adolescents
    Christoph Randler
    Institute of Natural Sciences and Technology, University of Education Heidelberg, Heidelberg, Germany
    Psychol Health Med 16:29-38. 2011
    ..These results indicate that eveningness might be an unspecific risk factor for mental and physical health...
  3. doi request reprint Asymmetries in commitment in an avian communication network
    Christoph Randler
    Department of Biology, University of Education Heidelberg, Im Neuenheimer Feld 561 2, 69120, Heidelberg, Germany
    Naturwissenschaften 100:199-203. 2013
    ..The communication network is asymmetric. Some species invest more than they receive from other species. As mobbing might incur costs, these are unequally distributed across the community...
  4. doi request reprint Chronotype but not sleep length is related to salivary testosterone in young adult men
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561 2, 69120 Heidelberg, Germany
    Psychoneuroendocrinology 37:1740-4. 2012
    ..Sleep duration was uncorrelated with testosterone, suggesting that timing of sleep - rather than sleep length itself - is influenced by testosterone...
  5. doi request reprint Assortative mating in morningness-eveningness
    Christoph Randler
    University of Education Heidelberg, Germany
    Int J Psychol 46:91-6. 2011
    ..Therefore, two extreme chronotypes are unlikely to meet each other because they have the smallest overlap in their preferred active time during the day due to the circadian rhythmicity...
  6. ncbi request reprint Age and gender differences in morningness-eveningness during adolescence
    Christoph Randler
    University of Education Heidelberg, Department of Natural Sciences, Heidelberg, Germany
    J Genet Psychol 172:302-8. 2011
    ..Composite Scale of Morningness scores are related to puberty scores in boys and girls, and when combining data (i.e., higher pubertal development was related to eveningness)...
  7. doi request reprint Foot preferences in wild-living ring-necked parakeets (Psittacula krameri, Psittacidae)
    Christoph Randler
    University of Education Heidelberg, Germany
    Laterality 16:201-6. 2011
    ..At the feeding location, 24 individuals were left-footed and 11 were right-footed. These observations suggest a foot preference in the ring-necked parakeet both on the population level and on the individual level...
  8. doi request reprint Morningness-eveningness, habitual sleep-wake variables and cortisol level
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561, Heidelberg, Germany
    Biol Psychol 85:14-8. 2010
    ..When comparing extreme chronotypes, morning types had higher cortisol levels immediately after awakening than evening types. These results strongly suggest an association between morningness-eveningness and CAR...
  9. doi request reprint Associations among sleep, chronotype, parental monitoring, and pubertal development among German adolescents
    Christoph Randler
    University of Education Heidelberg, Im Neuenheimer Feld 561 2 D 69120, Heidelberg, Germany
    J Psychol 143:509-20. 2009
    ....
  10. doi request reprint In sync with the family: children and partners influence the sleep-wake circadian rhythm and social habits of women
    Catherine Leonhard
    University of Education Heidelberg, Heidelberg, Germany
    Chronobiol Int 26:510-25. 2009
    ..This study suggests children have a strong influence on their mother's lifestyle and sleep-wake rhythm, far beyond the first months of life, and that children are a more important social factor than the male partner...
  11. doi request reprint Morningness-eveningness comparison in adolescents from different countries around the world
    Christoph Randler
    Department of Biology, Pharmacy, and Psychology, University of Leipzig, Leipzig, Germany
    Chronobiol Int 25:1017-28. 2008
    ..Adolescents were found to be more morning oriented both toward the East and North. The results indicate that climate, longitude, and latitude contribute to chronotype...
  12. doi request reprint Outdoor light at night (LAN) is correlated with eveningness in adolescents
    Christian Vollmer
    Department of Biology, University of Education Heidelberg, Germany
    Chronobiol Int 29:502-8. 2012
    ....
  13. doi request reprint Further evidence for the influence of photoperiod at birth on chronotype in a sample of German adolescents
    Christian Vollmer
    Department of Biology, University of Education Heidelberg, Im Neuenheimer Feld 561 2, Heidelberg, Germany
    Chronobiol Int 29:1345-51. 2012
    ..Future studies may require larger sample sizes, may need to explore how neonatal light exposure modulates chronotype, and may need to track how puberty and adolescent lifestyle habits mask the photoperiod effect...
  14. doi request reprint Daytime sleepiness during transition into daylight saving time in adolescents: Are owls higher at risk?
    Anne Marie Schneider
    University of Education, Heidelberg, Germany
    Sleep Med 10:1047-50. 2009
    ..Here, we looked at the transition into daylight saving time (DST) in adolescents. As adolescents tend to be evening types, one may expect that they suffer from a transition into DST...
  15. ncbi request reprint Evening types among german university students score higher on sense of humor after controlling for big five personality factors
    Christoph Randler
    Department of Life Sciences, Pharmacy and Psychology, University of Leipzig, Germany
    Psychol Rep 103:361-70. 2008
    ..Eveningness was related to sense of Humor scores in women but not in men. Social but not cognitive humor was predicted by eveningness...
  16. doi request reprint Association between chronotype and the constructs of the Three-Factor-Eating-Questionnaire
    Eva Schubert
    University of Leipzig, Institute of Biology, Johannisallee 21 23, Leipzig, Germany
    Appetite 51:501-5. 2008
    ..No association was found between BMI and cognitive restraint, hunger and flexible control. Also, no relationships existed between sleep length on weekdays or on weekends and BMI or eating...
  17. doi request reprint Association between chronotype and diet in adolescents based on food logs
    Daniel Fleig
    University of Education Heidelberg, Im Neuenheimer Feld 561 2, Heidelberg D 69120, Germany
    Eat Behav 10:115-8. 2009
    ..Mean breakfast time at the weekend was later in late chronotypes which was a result of later rise times of late chronotypes. The study showed that morning oriented pupils exhibit a healthier and more regular lifestyle...