Circadian Rhythms

What is the definition of a biological rhythm? 

• When you play the drums on your friends belly
• Distinct patterns of changes in body activity that conform to cyclical time periods
• The sleep/wake cycle
• An internal response to a change in your environment 

Siffre's study was conducted in what kind of environment?

• Skip
• Under the Sea
• Classroom 
• Cave

The sleep wake cycle is an example of?

• Circadian Rhythm
• Exogenous Zeitgeber
• Ultradian Rhythm 
• Infradian Rhythm 

Knuttson found that shift workers are how many times more likely to develop heart disease?

• 20
• 5
• 3
• 100

Which of these is an example of individual differences in circadian rhythms? 

• Age differences in sleep/wake patterns 
• People in these studies may not be representative of wider society

Siffre and Aschoff and Wever found that the average circadian rhythm is how many hours long?

• 24-25
• 29
• 22
• 13

Is daylight an example of an endogenous pacemaker? 

• Yes 
• No 

What type of variable is the use of artificial light in Siffre's cave study?

• Independent Variable
• Co Variable 
• Confounding Variable 
• Extraneous variable 

Small samples of participants in studies is a positive evaluation point for this topic?

• False
• True 
• It's not an evaluation point sir

Circadian rhythm is defined as...

• A type of rhythm with a frequency of more than one cycle per 24 hours
• A type of bio rhythm, subject to a 24 hour cycle which regulates bodily processes such as sleep/wake cycle and temperature
• A type of rhythm with a frequency of less than one cycle per 24 hours
• A type of rhythm with a frequency of one per year