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Dr.Jones is interested in studying how indoor lighting can influence people's moods during the winter.A sample of 100 households is selected.Fifty of the homes are randomly assigned to the bright-light condition where Dr.Jones replaces all the lights with 100-watt bulbs.In the other 50 houses,all the lights are changed to 60-watt bulbs.After two months,Dr.Jones measures the level of depression for the people living in the houses.In this study,the independent variable is
Fontanels
Soft spots on a baby's skull where the bones have not yet fused, allowing for flexibility during birth and brain growth.
Sella Turcica
A saddle-shaped depression in the sphenoid bone of the skull that houses the pituitary gland.
Pituitary Gland
A pea-sized gland located at the base of the brain, known as the "master gland," because it controls many other hormone glands in the body.
Sphenoid Bone
A butterfly-shaped bone at the base of the skull that forms part of the eye socket and the floor of the cranial cavity.
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