Assignment: Test of manual dexterity

Assignment: Test of manual dexterity
Assignment: Test of manual dexterity

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Assignment: Test of manual dexterity

1. Your research team has been tasked with finding the correlation of the following scenario:

Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows:

Person Dexterity Anxiety

1 1 10

2 1 8

3 2 4

4 4 -2

Describe the process that your research team would go through by completing the following:

Make a scatter diagram of the scores. Should be negative direction
Describe in words the general pattern of correlation, if any.
Figure the correlation coefficient.
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, standard deviation, Z scores, and hypothesis testing).
Give three logically possible directions of causality, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
Dexterity tests help to evaluate the manual abilities of individuals in order for therapists to provide the appropriate therapy or treatment that is required. They can also be used to pre-screen employees for jobs that rely on fine motor skills and coordination with the fingers, hands and arms.

Definition. Manual dexterity is the ability to make coordinated hand and fingermovements to grasp and manipulate objects. Manual dexterity includes muscular, skeletal, and neurological functions to produce small, precise movements. Development of these skills occurs over time, primarily during childhood.