$FL2@(#) IBM SPSS STATISTICS 64-bit MS Windows 22.0.0.0 ################P#########Y@22 Sep 1522:10:42 ###########################INTIMATE$###self concept: intimate relationships########################FRIEND ####self concept: friends ########################COMMON '###self concept: common sense intelligence ########################ACADEMIC####self-concept: academic intelligence ########################GENERAL ####self-concept: general ############################################################# ######################################################################### ####### PSYC 355 SPSS HOMEWORK 5 INSTRUCTIONS CORRELATION Part One: Green & Salkind: Lesson 31, Exercises 1, 3, and 4 The following helpful tips are numbered to correspond with the exercise number to which they refer (a dash indicates that no tips are needed): 1. Paste output (2 pts). Instead of answering a-c from the text, answer the following questions in their place: (2 pts. each) a. What is the correlation (r value) between number of articles published and overall quality of the instructor? b. Is there a significant correlation between overall course quality and overall quality as an instructor? Include the p value to support your answer. c. Of all the correlations, which is the only non-significant one? 2. Write your Results section by focusing on the following 2 correlations: a) number of publications with number of times cited by other authors, and b) number of publications with overall course quality. All homework \"Results sections\" must follow the example given in the Course Content document \"Writing Results of Statistical Tests in Current APA Format\" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (3) 3. -------- (3) Part Two: 1. A clinical psychologist would like to determine whether there is a relationship between observer ratings of children's avoidant behaviors and scores on an established diagnostic interview assessing childhood anxiety disorders. He administers the diagnostic interview to 28 children and records these scores. He then trains an observer to independently rate carefully-defined avoidant behaviors for each of the 28 children. These scores are totaled for an overall \"avoidant behavior index.\" On both the interview and the behavioral ratings, a higher score indicates higher levels of behaviors/symptoms. These scores are listed in the table below. Conduct a Pearson correlation coefficient analysis to determine whether there is a relationship between the interview scores and behavioral ratings for this group of children. The steps will be the same as the ones you have been practicing in Part One of the assignmentthe only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the \"Variable View,\" then return to the \"Data View\" to enter the data. Interview (Range 0 to Avoidant Behavior Page 1 of 5 PSYC 355 15) 6 3 5 13 7 6 5 8 3 4 2 2 6 10 7 12 1 5 3 9 5 8 7 4 3 9 5 3 Index (Range 0 to 30) 9 4 7 22 20 12 10 15 6 7 7 5 16 23 21 26 4 7 9 6 13 12 16 12 9 18 10 9 a) SPSS output (2 pts) b) Create a simple scatterplot of the relationship between these variables (define interview scores as the x-axis and behavioral ratings as the y-axis). (2) c) Write a Current APA-style Results section based on your analyses. All homework \"Results sections\" must follow the example given in the SPSS tutorials and the Course Content document \"Writing Results of Statistical Tests in Current APA Format\" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (2) Page 2 of 5 PSYC 355 2. A neuropsychologist is assessing the relationship between visual attention levels and the ability to multitask in a sample of 14 patients. He administers a visual continuous performance test to assess levels of visual attention on which scores can range from 1 to 20: a high score indicates better visual attention levels. He then has each patient complete a task that requires high levels of multitasking. Errors are counted, and a high number of errors indicates poor multitasking skills. The scores are listed in the table below. Conduct a Pearson correlation coefficient analysis to determine what the relationship is, if any, between visual attention and the ability to multitask. The steps will be the same as the ones you have been practicing in Part One of the assignmentthe only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the \"Variable View,\" then return to the \"Data View\" to enter the data. Visual Attention Test Scores 3 8 9 4 15 6 18 17 19 6 5 20 17 5 Number of Errors in Multitasking 25 18 18 26 6 19 3 4 6 16 14 2 5 23 a) SPSS output (2) b) Create a simple scatterplot of the relationship between these variables. (2) c) Write a current APA-style Results section based on your analyses. All homework \"Results sections\" must follow the example given in the SPSS tutorials and the Course Content document \"Writing Results of Statistical Tests in Current APA Format\" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (2) Part Three: Cumulative Homework Page 3 of 5 PSYC 355 1. A developmental psychologist is studying whether students in a certain preschool program have better classification skills than preschoolers in the rest of the state. She administers an instrument to assess the classification skills to students in the sample program. The mean score for preschoolers in the state on the instrument is 79. The psychologist tests the preschoolers in the program and records the scores in the table below. Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Follow the directions under the table below. Classification Scores 88 78 82 91 78 87 88 72 76 71 88 85 76 81 90 a) Paste appropriate SPSS output. (3) b) Paste appropriate SPSS graph. (2) c) Write a current APA-style Results section based on your analyses. All homework \"Results sections\" must follow the example given in the SPSS tutorials and the Course Content document \"Writing Results of Statistical Tests in Current APA Format\" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. (3) 2. In a study of the relationship between girls' playtime activities and self-esteem, 17 girls in a fourth-grade class are selected and randomly assigned to one of two groups. One group plays with a selection of Barbie dolls for one hour, and the other group plays with a selection of toy animal figures. At the end of the hour, the girls are given a verbal interview designed to measure self-esteem. Scores range from 1-12, and higher scores = higher feelings of self-esteem. Is there a significant difference between the groups on feelings of self-esteem? Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Follow the directions under the table below. Barbie Group 4 3 Page 4 of 5 PSYC 355 Toy Animal Group 7 9 6 10 4 6 5 10 8 5 11 10 6 7 9 a) Paste appropriate SPSS output. (2) b) Paste appropriate SPSS graph. (2) c) Write a current APA-style Results section based on your analyses. All homework \"Results sections\" should follow the example given in the SPSS tutorials and the Course Content document \"Writing Results of Statistical Tests in Current APA Format\" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. (2) Submit this assignment by 11:59 p.m. (ET) on Monday of Module/Week 5. Page 5 of 5 PSYC 355 SPSS CUMULATIVE ASSESSMENT INSTRUCTIONS The following research questions can be answered using 1 of the 5 tests you have learned so far: single-sample t-test, paired-samples t-test, independent-samples t-test, one-way ANOVA, or twoway ANOVA. Use the information in the tables to construct your SPSS data file, just as you have been doing in Part 2 of each homework assignment. There is only 1 correct choice of analysis for each question, and note that some tests are 1-tailed and some are 2-tailed. The assessment is open-book/open-notes. For each problem involving a test of significance, your answer must include: A) SPSS output; B) an appropriate graph from SPSS; C) a Results section in current APA style including a statistical statement (i.e., t(19) = 1.79, p = .049); a sentence summarizing the results \"in English\" (i.e., \"There was a significant difference between the two groups on the variable...\" or \"There was no significant difference...\"); and a decision about the null hypothesis. For ANOVA problems: Report statistical findings and make statements for all main effects and interaction effects. Use Tukey's test for any analyses requiring post hoc tests. Do not create a boxplot--use the graph we typically use in the course for this type of test. Submit this assignment by 11:59 p.m. (ET) on Monday of Module/Week 5. 1. Children who experience chronic pain as a result of medical procedures are the focus of a psychiatrist's study. Specifically, the psychiatrist wants to measure whether a new program helps decrease feelings of chronic pain in the short-term. He measures children's self-reports of pain levels before treatment on a standardized scale with a range of 0-10, with 10 being the most severe. He then administers the new program, and measures children's pain levels after treatment. Does the new treatment decrease self-reported levels of chronic pain? (16 pts) Patient Pain before tx 1 9 2 5 3 6 4 4 5 3 6 10 7 9 8 9 9 7 10 5 11 2 12 5 13 8 14 3 15 6 16 7 Pain after tx 7 6 4 3 3 7 6 8 8 4 4 4 5 4 3 4 a) SPSS output b) SPSS graph c) Current APA-style Results section 2. A health psychologist in a northern climate wants to evaluate the claim that UV lamps help lower depressive symptoms in middle-aged women. She recruits volunteers who meet the criteria for clinical depression and assigns them to two groups: one group receives a standard treatment for depression and undergoes a half hour of UV lamp therapy each day; the other group receives the same standard treatment for depression but without UV lamp therapy. At the end of two months, she administers a depression inventory where lower scores indicate fewer depressive symptoms (lower levels of Page 1 of 4 PSYC 355 depression). Assume all other variables are controlled for in the study. Evaluate the claim that depression treatment plus the UV lamp results in lower depression scores than depression treatment alone. (16 pts) Depression Treatment + UV 34 14 29 31 43 17 31 22 29 19 25 27 12 32 Depression Treatment Only 39 31 29 25 13 14 41 24 26 37 23 41 47 42 a) SPSS output b) SPSS graph c) Current APA-style Results section 3. As part of a new prevention program, a clinical psychologist wants to see whether feelings of alienation differ as a function of immigration status in a local high school. She divides volunteer students into three categories: first-generation immigrants, second-generation immigrants, and non-immigrants. She then administers an instrument assessing feelings of alienation, where higher scores indicate stronger feelings of alienation from peers, adults, and society in general. Is there a difference in alienation scores among these three groups? (16 pts) Firstgeneration immigrants 35 39 34 37 36 23 39 Secondgeneration immigrants 26 37 28 29 36 25 18 Nonimmigrants 29 22 17 25 19 30 16 a) SPSS output b) SPSS graph c) Current APA-style Results section 4. In response to media reports of violence on college campuses, a psychologist who works at a local community college decides to study students' perceptions of campus safety. He hopes to use these results to help develop an on-campus violence prevention program. The administration has asked him additionally to look at whether perceptions of safety differ Page 2 of 4 PSYC 355 depending on students' year in school and gender. The psychologist administers a questionnaire with possible scores ranging from 1-70, with higher scores indicating higher perceptions of safety on campus, and lower scores indicating perceptions that the campus is less safe. Based on the data collected below, do year in school and/or gender have an effect on perceptions of campus safety? (16 pts) Freshmen Male Female 39 66 54 66 60 51 46 45 57 32 Sophomor e 44 32 62 59 29 32 21 30 49 53 Junior Senior 63 67 46 51 41 56 52 60 47 59 45 53 68 57 60 61 55 42 58 61 a) SPSS output b) SPSS graph c) Current APA-style Results section 5. A cross-cultural psychologist living in an overseas, non-Western rural area has a background studying culture bias in traditional psychological testing procedures. She contends that members of a rural community who normally score lower than average on traditional Western-style IQ tests will score better than the general population on a new test that emphasizes practical and social intelligence. Scores on the test can range from 1-100. She recruits 18 volunteers and administers the new test. Their scores are as follows: Practical/Social IQ Scores on New Test 78 63 82 87 74 61 58 88 86 82 64 61 71 Page 3 of 4 PSYC 355 67 51 76 53 88 Based on early normative data in Western countries, the mean for the general population is 64. Do members of this community score significantly higher on the new IQ test? (16 pts) a) SPSS output b) SPSS graph c) Current APA-style Results section Page 4 of 4 SPSS HOMEWORK 5 INSTRUCTIONS CORRELATION Part One: Green & Salkind: Lesson 31, Exercises 1, 3, and 4 Betsy is interested in relating quality of teaching to quality of research by college professors. She has access to a sample of 50 social science professors who were teaching at the same university for a 10-year period. Over this 10-year period, the professors were evaluated on a 5point scale on quality as instructors and on quality of their courses. Betsy has averaged these ratings to obtain an overall quality rating as an instructor (rating_1) and the overall quality rating of the courses (rating_2) for each professor published during this time period (num_pubs) and the number of times these articles were cited by other author (cites). 1. Conduct a correlational analysis to investigate the relationships among these variables. Identify the following on the output: a. P value for the correlation between rating_1 and rating_2 b. Correlation between cites and num_pubs c. Correlation between cites and rating_1 3 Write a Results section based on your analysis of these data. 4. Create a scatterplot matrix to show the relationships among the four variables