Research methods exam 2 retake

A major limitation in the use of video-recording in observational research is its

obtrusiveness

Most conservative follow-up methods for ANOVA

Scheffe

to determine whether data are normally distributed, one can test to see whether the curve is shifted to the left or right. This shift is called

Skewness

The T test is used to

Test whether two groups differ significantly.

If ANOVA has found a significant difference among 4 treatment groups, a follow up test such a the Scheffe is needed to determine

Which of the groups differ significantly from the others

The major weakness of epidemiological studies is

inability to experimentally establish cause and effect

The use of interclass correlation to estimate reliability in motor performance instead of Pearson r has the advantage of

allowing analysis of trial to trial change, estimating reliability for more than two trials. A and B

A type of study that matches individuals with and without disease on factors such as age and ethnicity is that

case-control study

Prevalence of disease differs from incidence of disease in that prevalence refers to the number of

people who presently have a disease, whereas incidence relates to new cases

When the purpose of the research is to determine the effects of one independent variable on one dependent variable, the best choice of a statistical analysis is

ANOVA

A researcher sought to find out which of two exercises was more affective in building endurance. One group used exercise A, and the other group used exercise B. At the end of the study, the researcher should compare the two groups' scores by

An independent T test

A statistical technique that tests for significant differences between observed and expected frequencies of occurrence is

Chi Square

Comparing test items with the course objectives checks which type of validity

Content

A chi-square analysis compares the responses to a question on a recreational preference of males and females at three grade levels. The resulting two-way caalssificaation structure is called a

Contingency table

A researcher wishes to determine whether a treatment group made a significant improvement from the pretest (M=25) to the post-test (M=30). The correct statistical test to use to compare the two means is the

Dependent T test

which one of the follow statements about dual publications is not true

Dual Publication is permissible if the two journals are in different languages

The case study

Gathers data from a single person or from a limited number of similar people

Select the false statement

If a null hypothesis is false, but the researcher is able to reject it, a type two error has occurred

A predictive validity technique involving the construction of a two-way grid of percentages of student at different levels of an aptitude test who achieved different grades is called

an expectancy table

A researcher wants to determine the percentages of time that a teacher spends in various tasks, such as demonstration, explanation, and monitoring students. Which of the following is probably the most valid way to research this

an observational study

A study design uses, for example, two groups of people representing a disease-free population who are then classified as exercisers and non-exercisers. After a period of time, the mortality rates of each group are compared. this design is called a

cohort study

additional factors that can affect the relationship between physical activity and blood cholesterol, such as smoking, body fat, and so on, are called

confounding factors

Determining the relationship between students' attitudes toward drugs and the frequency of drug usage is an example of a ____ study

correlational

The determining factor in the order of authorship of a research publication is that the first author is the person who

develops the idea and plans the research

A basic characteristic of correlational research is that it

does not manipulate variables and hence cannot establish cause and effect

A teacher wishes to determine the reliability of three trials on a performance test. He uses ANOVA to obtain the reliability coefficient. This technique is called

intraclass correlation

A researcher wishes to study a group of children over aa period of 10 years beginning in 2016 and ending in 2025. This is an example of_____ study

longitudinal

The term that denotes using ideas, writing, or drawing of others as their own is

plagerism

If a thermometer measured the temperature in an oven at 400 degrees five days in a row when the temperature was actually 337, this measuring instrument would be considered

reliable but not valid

Determinants of disease are often called

risk factors

According to the American Psychology Association, when a graduate student submits her thesis or dissertation for publication jointly with the major professor the first author should be the

student

Use of a one-tailed versus a two-tailed test of significance of the difference between two sample means depends on

whether the difference is expected to be in one direction only