Explain the all-or-none law in the generation of an action potential.
What will be an ideal response?
The all-or-none law means that action potentials either occur or fail to occur, and action potentials occur with the same strength each time they are generated. Action potentials do not differ in strength, even if a signal coming into a neuron differs in strength. Once the threshold potential for the cell membrane is reached, an action potential will always be generated.
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Imagine that you have just read the sentence, "The man in the back row has green hair." Based on research on propositional representation in memory, will the words "man" and "hair" be represented in memory together?
a. Yes, because these words belong to the same proposition. b. Yes, because these words have strong meaningful associations. c. No, because they are separated by many other words in the actual sentence. d. It is impossible to say because research cannot be done on propositional representations.
The knowledge that quantity is unrelated to the arrangement and physical appearance of objects is known as
a. centration. c. symbolic function. b. conservation. d. transformation.
What is the main basis of friendship, not just during middle childhood but at all ages?
A. frequency of interaction B. social economic status C. proximity D. similarity
Key symptoms of bulimia nervosa include recurrent episodes of binge eating, a feeling of being “out of control” during binge eating episodes, and __________
A) inappropriate strategies for weight control B) amnesia for food consumption C) a fear of running out of food D) a desire to maintain a state of starvation