The Circadian Rhythms

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G G X B K C M F U G J H U H J E E D M
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B R C M K Q R Q G F K R I P F D H C U

Clues

  • A criticism of Siffre's study is that he used dim lighting. Who (1999) found that dim lighting could be used t change circadian rhythms up to 28 hours or down to 22 hours? (8)
  • Hord and Thompson (1983) did a field rather than a lab experiment and found body temperature and IQ had no correlation. This suggests the lab experiment lacked ________ realism (7)
  • In the hormone production cycle Cortisol peaks at six in the morning and is at its lowest whilst melatonin is at its highest at what time? (8)
  • Michael _______________ studied whether the sleep wake cycle exists when people are isolated from external cues (6)
  • Siffre's study is invalid because it's a case study and because they were in caves where it may have been ? (4)
  • The core body temperature cycle reaches its lowest at four thirty in the morning and its highest at _________ o'clock in the afternoon. (3)
  • The explanations for circadian rhythms are criticised as being what? (13)
  • The hormone production cycle is very important when taking what? This is why research into circadian rhythms is so important (10)
  • The sleep wake cycle is controlled by the internal clock as well as by exogenous ___________________ (10)
  • Who (1999) found that IQ performances are best at 7pm? His research has real world applications because if he is correct exams are taken when people aren't at their most capable (5)

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