Tutor profile: Michaela F.
What are the developmental stages of Piaget's cognitive development theory, and what does each one briefly mean?
The four stages are the sensorimotor stage, preoperational phase, concrete operational phase, and the formal operational phase. The sensorimotor phase focuses on learning through experience, and typically ranges from 0-2 years old. The preoperational phase focuses on the development of language, memory, and imagination, and typically ranges from 2-7 years old. The concrete operational phase focuses on becoming more logical and also less logical, meaning there's a greater awareness on the world outside of themselves, and ranges from 7-11 years old. Lastly, the formal operational phase focuses on learning and grasping abstract concepts, as well as relationships; it typically occurs during adolescence into adulthood.
Subject: English as a Second Language
Looking at the following sentence, what verb form is being used? When is this form best used? "She has been running for three years."
The form used is the present perfect continuous form. This form is best used for actions that have started in the past, but are still occurring in the present.
In what case would you use an t-test for independent means analysis?
If one is examining the differences between groups of one or more variables, and the same participants are not being tested more than once. There can only be two groups being tested, and neither is being tested more than one. For example, if you want to test between the groups of students in Canada and Europe, the t-test for independent means would be used since participants would only be tested once and there are only two groups.
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