It might be draw the attention towards the reader and how the audience of the story will view as so he wrote it in 2nd person narrative
Answer:
a. the search for food items
Explanation:
Based on the information provided within the question it can be said that both of which where on the search for food items. Both wanted to discover new places and land where they may find new food items, both to consume as well as gather to sell and make a living. They did this by traveling mainly to what is now known as the United States of America, as well as other places throughout the world
In Pavlov's original experiment, the bell began as a(n) neutral stimulus and by the end became a(n)s; conditioned stimulus.
Bell ringing was first used by Pavlov as a neutral stimulus. A stimulus that triggers an instinctive response is known as an unconditioned stimulus. Food served as the unconditioned stimulus in Pavlov's experiment. A reflexive response to stimuli is referred to as an unconditioned response. In his experiment, the dogs would slobber in response to food, but after numerous presentations of the food combined with the sound of a bell, the dogs would start to slobber in response to the sound alone. The bell's tone served as the conditioned stimulus in this instance.
A neutral stimulus is one that first causes only the attention to be focused, not any particular response. In classical conditioning, the neutral stimulus transforms into a conditioned stimulus when combined with an unconditioned stimulus.
To know more about conditioned stimulus refer to: brainly.com/question/18080270
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The threat to validity that is likely to occur in the scenario above is Selection Bias.
<h3>What is Selection Bias?</h3>
This occurs when a researcher has control and intentionally chooses those who are going to be researched, observed, or studied. To eliminate this bias, the scientist must ensure that the sample population is selected very randomly.
Other threats to validity are:
- History
- Maturation
- Attrition
- Social Interaction
- Instrumentation
- Testing
- Regression to the mean, etc.
Please see the link below for more about Threat to Validity:
brainly.com/question/4168290
