Lab Report

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Running Head: SHORTENED VERSION OF TITLE Descriptive Title of Report By Nathaniel Pelley 201104203 A Lab Report presented to Janea Layes in Psychology 210 Learning Department of Psychology St. Francis Xavier University November 26, 2012 Title of your Paper 1. In 2-4 sentences, describe the aim of this experiment. What were we investigating? The aim of this experiment is to get dogs to salivate to the ringing of a bell. The researcher was investigating this by presenting a CS and a US to these dogs. 2. The four components we are manipulating are as follows: -Acquisition Trials -CS (Conditioned Stimulus) -US (Unconditioned Stimulus) -CS-US 3. The strength of conditioning will be measured by measuring the mean drops of saliva that the dog produced. This measurement will be in accordance to the manipulation of the acquisition trials, CS intensity, US intensity, and the CS-US interval. 4. Key Terms: Acquisition trials: Pairings of the CS and the US. Conditioned Stimulus (CS): The neutral stimulus, that before conditioning does not naturally bring about the desired response. Unconditioned Stimulus (US): The stimulus that naturally evokes the desired response. Inter-Stimulus Interval or CS-US Interval: Amount of time between the presentation of the Conditioned and Unconditioned stimuli. Unconditioned Response (UR): The response rendered by the presentation of both CS and US (bell and food). Conditioned Response (CR): The response that is rendered by the presentation of the CS (bell). Extinction Trials: Presentation of the CS without the US that leads to a decrease in the response. 5. Based on the readings, what was hypothesized concerning the effect of manipulating the number of acquisition trials on the strength of conditioning? Which did you expect to be the most optimal? Which did you expect to be the

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