correlation coefficient

a numerical index reflecting the degree of linear relationship between two variables. It is scaled so that the value of +1 indicates a perfect positive relationship (such that high scores on variable x are associated with high scores on variable y), –1 indicates a perfect negative relationship (such that high scores on variable x are associated with low scores on variable y, or vice versa), and 0 indicates no relationship. The most commonly used type of correlation coefficient is the Pearson product-moment correlation coefficient.

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Psychology term of the day

April 26th 2024

trigeminal nucleus

either of two nuclei associated with the three main roots of each trigeminal nerve. The spinal trigeminal nucleus extends downward in the medulla oblongata to the upper region of the spinal cord and receives fibers from pain and temperature receptors. The principal sensory trigeminal nucleus receives large myelinated fibers from pressure receptors in the skin and relays impulses to the thalamus.