Read the following article to assess if this claim scientific byanswering the questions that follow:
The term lunar effect refers tocorrelations between specific stages of the roughly 29.5-daylunar cycle and behavior in humans or other livingthings. In some cases these rhythms may depend on external cues,such as a greater or smaller amount of moonlightdue to the moon's phases. A considerablenumber of studies have examined the effect on humans. By the late1980s, there were at least 40 published studies on the purportedlunar-lunacy connection,and at least 20 published studies on thepurported lunar-birthrate connection. However, several extensiveliterature reviews and meta-analyses found no correlation betweenthe lunar cycle and human biology or behavior.
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Other studies found evidence that those with mentaldisorders i.e. Schizophrenia generally exhibit 1.8% of increasedviolent or aggressive episodes during the full Moon, but a morerecent study found no such correlation to that of non-schizophrenichuman beings. An analysis ofmental-health data found a significant effect of Moon phases, butonly on schizophrenic patients.
A recent study of 33 volunteers that did not account for ageand sex found a statistically significant connection between sleepquantity and quality and lunar phases, even though the subjectscould not see the moon or its light.  A July2013 study carried out at the University of Baselin Switzerland suggests a correlation betweenthe full Moon and human sleep quality.[5]Professor Cajochen and colleagues presented evidence that alunar rhythm can modulate sleep structure in humans when measuredunder the highly controlled conditions of a circadian laboratorystudy protocol without time cues. Studying 33 volunteer subjects,the researchers found that subjective and objective measures ofsleep varied according to lunar phase and thus may reflect humancircalunar rhythmicity. Stringently controlled laboratoryconditions, in a cross-sectional setting, were employed to excludeconfounding effects such as increased light at night or thepotential bias in perception. Measures of lunar influence on sleepstructure, electroencephalographic activityduring non-rapid eye movement sleep (NREM), andsecretion of the hormones melatonin andcortisol, were retrospectivelyanalyzed.   Cajochen said: \"The lunar cycle seems toinfluence human sleep, even when one does not 'see' the Moon and isnot aware of the actual Moon phase.\"
However, there are suggestions that the 2013 Cajochen studyis faulty because of a relatively small (n=33) sample size andinappropriate controls for age and sex. A 2014 study with largersample sizes (n1=366, n2=29, n3=870) and better experimentalcontrols found no effect of the lunar phase on sleep qualitymetrics. A 2015 study of 795 children found a 3 minute increase insleep duration near the full moon, but a 2016 study of 5,812children found a 5 minute decrease in sleep duration near the fullmoon. No other modification in activity behaviors were reported,and the lead scientist concluded: \"Our study provides compellingevidence that the moon does not seem to influence people'sbehavior.\"
- What are the scientific bases for the claim that there is alunar effect on human behavior?
