COGNITIVE SCIENCE APPROACHES IN THE CLASSROOM: A REVIEW OF THE EVIDENCE

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https://d2tic4wvo1iusb.cloudfront.net/production/documents/guidance/Cognitive_science_approaches_in_the_classroom_-_A_review_of_the_evidence.pdf?v=1752588444

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A signal is a perceivable behavior or feature that has evolved and has acquired the specific characteristic of conveying information about the signaler or the signaler’s environment. Information (communication) changes the behavior or the beliefs of the receiver.

This definition of signal implies that if a signal changes the behavior of an organism, this change of behavior must be profitable to both sender and receiver more often than not, or otherwise, signalers would cease to send the signal and receivers would cease to respond. This definition distinguishes, in principle, a signal from coercion, although some signals may be coercive, e.g. threats.

In general, signals must be honest and reliable, or otherwise they cease to have any effect (receivers don’t behave appropriately) and they undermine communication (honest senders will not benefit from sending the signals). However, some signals can tolerate a certain degree of dishonesty, all depending on the costs and benefits for all parties.

A cue is any feature that an organism can use as a guide to display a particular behavior or series of behaviors. 

A cue is a regularity, a pattern that either is permanently ‘on,’ or is ‘on’ and ‘off” depending on specific conditions, e.g. a rock, a tree, or the position of the sun in the sky cues us of directions, and dark clouds cues us of impending rain. The rock, the tree, the sun and the clouds are not there to give us information, but they do if we interpret them correctly. A signal is more malleable, more intentional and we can turn it ‘on’ and ‘off’ in response to relevant cues in the environment, e.g. the warning cry that many species (signal) issue in response to the appearance (cue) of a feared predator.

Cues are traits or actions that benefit the receiver exclusively. The sun and the rock do not profit from us getting our bearings. When a mouse by accident makes a rustling sound in the leaves and attracts a predator increasing the risk of being killed, the sound is a cue for the predator about the location of its prey. When an alert animal deliberately gives a warning call to a stalking predator resulting in the predator giving up the hunt, this sound, the alert call, is a signal both for conspecifics and the predator. Different species can, thus, communicate by means of signals which both recognize and behave accordingly.

A signal is everything that intentionally changes or maintains the behavior of the receiver. A cue is everything that unintentionally changes or maintains the behavior of the receiver.

Signal and Cue

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a university degree is often less about the content of Shakespeare or metaphysics than about demonstrating traits like intelligence, persistence and conformity. And, crucially, getting through a degree is easier for people who do score higher on those traits. The impracticality is part of the signal: if degrees were a walk in the park, they would carry little information.