the awnser is c I'm preety sure
Answer:
I would say it is the Variable-Ratio Schedule because she doesn't know when she will be visited but she wants to be ready anyways just in case.
Explanation:
The purpose of sending troops to Vietnam was to prevent Vietnam from becoming a communist state- much like the neighbouring China did. The US feared the domino effect in which more and more neighbouring states become communist.
This policy was called the containment policy (the answer is B) - communism were to be contained.
Answer:
a. longitudinal
Explanation:
A longitudinal study examines a given group over a long period of time, so collecting data from the same group of 30 people over their lifetime certainly fits that definition. It's more like an evolution study.
A cross-sectional compares different groups at the same point in time. So, it's more like a survey.
A microgenetic is much focused in time, providing multiple data sets in a short time to examine rapid evolution of a subject.
An experimental study design will make interactions and experiments with the study group, while this is not the case here apparently, and experimental is usually for a much shorter period than a generation.
<span>Chunking increases the capacity of short-term memory by recoding information into more meaningful units. When large amounts of information are given, short-term memory usually remembers the first set of unrehearsed information (primacy) or the last set of unrehearsed information (recency), but few things from the middle.</span>
