Answer: alternative D.
Explanation: Dr. DeVries should choose his sample population randomly in order for his research to be representative, even having a specific population, which is high school seniors, that he wants to study. By <u>choosing specifically students from an exclusive college preparatory school, he isn't considering how students from other schools might perform in his research test</u>. This would be a very important step for him to understand how the practice in problem solving affects the ability related to it. Otherwise, he will have a distorted result.
Answer:
anxiety
Explanation:
Anxiety may be defined as a disorder of one's mental health which is characterized by the feelings of anxiety, worry, or fear which are so strong that it can interfere one's daily activities and behaviors.
Anxiety is our body's natural response to stress.
In the context, whenever Bill is in the aeroplane, he feels fear of flying and his nervous system automatically arouses because of the fear. This behavior is called as anxiety.
Answer:
The answer is accomodation.
Explanation:
In psychology, accomodation means the modifying of existing knowledge when new information is presented. This occurs because we organise our knowledge in <u>schemas</u>, which are bits of data about a concept. In the example, Alfred's schemas of a horse may include a tall animal with four legs and a long face. When presented with new information (black and white stripes are common in zebras, not horses), he must change his previous knowledge of horses.
The answer is 21 months.
At just a little short of 2 years, you can expect a normal and healthy toddler to utter their first multi-word sentence.
For female toddlers, it might be a bit earlier but generally, 21 months is the average time.
If a toddler speaks a bit later, e.g. more than 48 months, it is recommended to go to a pediatrician for a quick check up.
