As Andy goes through his college classes, he realizes he has a lot of difficulty remembering what he has heard and been taught. He seems to be experiencing a serious memory problem. Which neurotransmitter is most likely involved in this problem?

Which of the following is the most recent and accepted theory of colour vision?

a) The trichromatic theory, which states there are three different receptors, one for blue, one for green and one for red. b) The opponent-process theory, which also assumes that there are three different receptors: one for blue-yellow, one for red-green and one for black-white c) Dual-process theory, which takes part of Young-Helmholtz's theory (cone characteristics and function) and part of Hering's theory (cells in visual pathways alter firing dependent on wavelengths) and combines for one theory of colour transduction. d) We are still researching colour vision and what theory you follow depends on what theory you read first. There is no consensus.

This type of treatment viewed patients with severe mental disturbances as human beings who should be cared for with sympathy and kindness.

A. moral treatment B. the religious model C. phrenology D. compassionate care