Jack wants to test whether runners on his cross-country team improve with his new training regimen. He measures their run times at the beginning of the season and again at the end of the season. Runners in Jack's study improving their times due to running generally and not necessarily due to the new regimen is an example of which of the following threats?

a. Selection
b. Maturation
c. History
d. Instrumentation


b

Education

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Explain why Sankar-DeLeeuw (2002) believes it is important to identify and intervene with gifted and talented children at an early age?

What will be an ideal response?

Education

How do textbooks prohibit individuals from uncovering cultural identity?

a. Textbooks are not always accurate or provide complete information. b. Textbooks do not address historical data. c. Textbooks are not relevant for discussion on cultural identity. d. Textbooks only highlight the negative aspects of cultural groups.

Education

Fourteen year old Danny wrote a composition with interesting ideas but many errors in

spelling and punctuation. Errors in spelling and punctuation are known as: a) mechanical errors b) organizational errors c) structural errors d) repetitive errors

Education

In what kind of research involves collecting multiple types of data?

a. Quantitative b. Qualitative c. Correlational d. Mixed

Education