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doctoral learner/researcher to become familiar with the scope of the topic and to identify gaps or tensions within the existing literature on the topic

Successful completion of a doctoral dissertation requires significant amounts of independent reading on the research topic. This allows the doctoral learner/researcher to become familiar with the scope of the topic and to identify gaps or tensions within the existing literature on the topic. These gaps and tensions become the source of the dissertation research. In this assignment, you will read and annotate potential sources in your dissertation field of interest. Those demonstrating the most merit to the best of your understanding of the topic at this time should be added to your RefWorks list for potential inclusion in the literature review section of your dissertation.

General Requirements: Use the following information to ensure successful completion of the assignment:

· Locate the “Literature Review Resources Tool” in the Class Resources for this class. Download the tool and use it to complete this assignment.

· It is recommended that you engage in this activity throughout the duration of this course.

· Instructors will be scoring your submission based on the number of unique sources identified in the list submitted.

· Doctoral learners are required to use APA style for their writing assignments. The APA Style Guide is located in the Student Success Center.

Directions: Read at least 10 empirical articles in your general dissertation field that you have not read previously. In the “Literature Review Resources Tool,” provide the following for each source that you are adding to the document:

1. The APA formatted citation. 

2. A brief annotation (150-250 words) of the key points of the source.

3. An indication of whether the source has been added to (Y) or excluded from (N) your RefWorks list.

Highlight the additions to the document so your instructor can readily identify them

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A researcher is interested in the relationships between the following four variables: On-line game addiction, narcissistic personality traits, self-control, and aggression. Data are collected from a sample of 226 individuals. The data can be found in the assessment SPSS spreadsheet assessment.sav’. For each variable, higher values indicate greater levels of the variable. Analyse the data using SPSS and report the results using standard APA conventions. (20 marks)? The focus is clearly on the relationships between

On-line game
addiction, narcissistic personality traits, self-control, and aggression.

On-line game
addiction, narcissistic personality traits, self-control, and aggression.

QUESTION 1
A researcher is interested in the relationships between the following four variables: On-line game
addiction, narcissistic personality traits, self-control, and aggression. Data are collected from a
sample of 226 individuals. The data can be found in the assessment SPSS spreadsheet
‘assessment.sav’. For each variable, higher values indicate greater levels of the variable. Analyse
the data using SPSS and report the results using standard APA conventions. (20 marks)
? The focus is clearly on the relationships between

  • On-line game addiction
  • Narcissistic personality traits
  • Self-control
  • Aggression
    ? State what you are going to do to investigate this
  • Descriptives
  • Scatterplots
    ? Pearson Correlations Produce a table of descriptive statistics
  • Mean
  • Standard Deviation
  • Skew
  • Kurtosis
  • N
    ? Comment on any observed deviations in skew or kurtosis (Z-scores that are greater
    than +/- 1.96) but indicate that no transformations will be performed. Indeed, there are
    few options for kurtosis and it is not generally seen as a big problem anyway.
    ? Present scatter plots between all pairs of variables with lines of best fit added.
  • Could be individually or in a matrix.
  • Comment on what the relationships look like.
  • Do there seem to be any outliers, and if so, do they look like they are going to make an unacceptable impact on the relationship observed?
    ? Present correlations matrix.
  • Comment on the strength, significance and direction of the correlations.
    QUESTION 2
    Following the initial analysis conducted in Q1 the researcher goes on to look at which of the
    variables (On-line game addiction, narcissistic personality traits, and self-control) are the best
    predictors of aggression. Analyse the data using SPSS and report the results using standard APA
    conventions. (30 marks)
    ? All needs to be referenced according to APA style.
    ? It requires multiple regression
    ? Briefly indicate whether the variables would be expected to be good predictors based on correlations reported in question 1
    ? R Squared
    ? Anova – significance and what it means
    ? Individual Predictors
    o Beta coefficients and confidence intervals
    o T-tests for the beta coefficients § Part correlations (compare to zero order)
    o Collinearity
    ? Indicate which appears to be best predictor, second, third.
    ? State the regression equation
    QUESTION 3
    The researcher also thinks that it is possible that there are sex differences for these variables. You
    will also find codes for males and females in the data set. Analyse the data using SPSS to investigate
    this, and report the results using standard APA conventions. (20 marks)
    ? All needs to be referenced according to APA style.
    ? State that you performed Independent Sample t-tests to identify if sex differences exist.
    ? Table of descriptive statistics
  • Mean, SD, N
    ? Report each t-test separately:
    EXAMPLE:
    The 31 participants in the rosemary condition (M = 15.90, SD = 2.45) performed significantly better on time based prospective memory than the 34 participants in the no aroma condition (M = 14.41, SD = 2.451), t(63) = – 2.59, p = .012. Calculation of Cohen’s d indicated the presence of a medium effect size, d = .64, 95% CI [.14, 1.14].
    ? Draw an overall conclusion. Are there sex differences? Which variables? How big? Consistently in the same direction?
    QUESTION 4
    As I further investigation, the researcher wants to see if playing a violent video game increases
    levels of aggression. She runs a study in which aggression levels are measured in 40 participants
    before and after playing a violent video game. Use SPSS to compare the variables Aggro_pre and
    Aggro_post in order to answer this question. (10 marks)
    ? All needs to be referenced according to APA style.
    ? State that you performed a Paired samples t-test to see if aggression after playing the game is greater than before.
    ? Table of descriptive statistics
    o Means, SD, N
    o Report t-test.
    EXAMPLE:
    The results from the time based prospective memory test (M = 15.12, SD = 2.42) and the event based prospective memory test (M = 15.75, SD = 1.64) revealed significantly better performance for event based prospective memory, t(64) = -2.11, p = .039. Calculation of Cohen’s d indicated the presence of a small effect size, d =.26, 95%CI [.01, .50].
    ? Draw a conclusion. Is the effect potentially important?
    QUESTION 5 (Needs bibliography review)
    Explain the advantage of reporting effect sizes in addition to significance levels. (20 marks)
    ? What is statistical significance?
    ? What is effect size?
    ? The distinction between statistical significance and scientific (or practical)
    importance.
    ? Give an example.
    ? Factors that affect significance
    ? Problem with effect sizes eg many different types
    ? Value of effect size in addition to statistical significance
    ? Overall summary/conclusion
    ? All needs to be referenced according to APA style
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A researcher based in Miami wants to learn about the experiences of homeless people in the United States by conducting interviews with them

In this forum, you will use you will use skillsets you have developed in this module related to the sampling process by responding to the following discussion prompt and answering all (4) questions. You may want to use the internet in addition to resources provided in Module 7. 
A researcher based in Miami wants to learn about the experiences of homeless people in the United States by conducting interviews with them. He plans to conduct in-person interviews with the homeless people he samples. He is having trouble deciding how to draw a representative sample of homeless people because homeless people are difficult to find, often move from place to place, and are often cycled in and out of homelessness. The researcher has one year and a $5,000 grant with which to conduct his interviews.

Your task is to help this researcher.

1. What is the population he wants to generalize to?
2. What are possible sampling frames (sources) from which he can draw his sample?
3. What do you think would be a good/realistic sample size?
4. What sampling methods would you suggest he uses? Why?

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