True, when analyzing data measured by a continuous quantitative variable, the statistical tests of estimation and contrast frequently used are based on supposing that a random sample has been obtained from a probability distribution of normal type, but in many cases this assumption is not valid, in these cases we have two possible mechanisms: The data can be transformed in such a way that they follow a normal distribution or you can resort to parametric or non-parametric tests.
A reflex is a natural movement brought on by a particular stimulus.
<h3>What is stimulus?</h3>
A stimulus in physiology is a perceptible alteration in the physical or chemical composition of an organism's internal or external environment. Sensitivity refers to an organism's or organ's capacity to recognize external stimuli and respond appropriately (excitability). As with touch receptors in the skin or light receptors in the eyes, sensory receptors can pick up information from both within and outside the body. Chemoreceptors and mechanoreceptors are examples of internal sensory receptors. A stimulus can trigger a response via stimulus transduction when it is recognized by a sensory receptor. The first element of a homeostatic control system is frequently an internal stimulus.
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Allison is eight months old. according to Piaget, when she sees her ball roll behind the television set, she will not look for it. allison is in Piaget's sensory; physical stage of cognitive development.
The preoperative stage occurs between the ages of 2 and 6 years and is the second stage of Piaget's stages of cognitive development. During most of the preoperative period, the child's thinking is egocentric or egocentric.
The formal surgical phase begins around the age of 12 and continues through adulthood. When adolescents enter this stage, they acquire the ability to think in an abstract way and manipulate ideas in their minds without relying on concrete manipulations (Inhelder & Piaget, 1958).
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