PSYC 290 Independent T-Test Lab Assignment
Assignment ID Number AFFGEHU83939HD Type of Document Essay Writing Format APA/MLA/Harvard Academic Level Masters/University References/Sources 4 References
PSYC 290 Independent T-Test Lab Assignment
PSYC 290: RDA I
Independent t-test Lab
You may complete this assignment in pairs. (Remember, a “pair” consists of exactly two people.) Be sure to write both your names on the assignment, or you will receive no credit.
- When do we use a one-sample t-test as opposed to an independent t-test? Explain. (1 points)
- Come up with your own idea for a study where you would use an independent t-test to address your hypothesis. Explain why you would need to use an independent t-test. In so doing, you should clearly identify your IV and DV and explain how they are being measured. (4 points)
For SPSS problems, you will produce a full APA-style write-up of the results that clearly explains your hypothesis and findings. Be sure to proofread, and use proper APA format with respect to decimal places (2, except for p-values), italics, etc. Use the provided examples as a guide. Note: you should include a copy of your statistical output for all of the analyses.
- Although the overall average brain weight of adults is 1,345 grams, and the average head size is 3,675 cubic centimeters (cm3), a researcher there are gender differences in both. A researcher collected the brain weights of 237 individuals in Indiana, PA to see if men and women differed in their brain weight and head size. Use the dataset HeadSize.sav for the following questions.
- Did male and female Indiana, PA have different brain weights from each other? Write out results using proper APA format as demonstrated in the guide. (5 points)
- Did male and female Indiana, PA have different head sizes from each other? Write out results using proper APA format as demonstrated in the guide. (5 points)
- We asked a sample of N = 60 college students to report how much they paid for their last haircut. Did females (on average) spend more money on their last haircut than males? Use the dataset Haircut.sav for the analysis. Write out results using proper APA format as demonstrated in the guide. (5 points)
- Researchers want to know if individuals are perceived to be more intellectual if interviewers head an audiotape of their interviews as opposed to reading a transcript. Using the datafile HiringStudy.sav, compare the intellect rating of participants based on interview condition (audio or transcript). Is there a significant difference between the groups? Write out results using proper APA format as demonstrated in the guide. (5 points)
- Researchers want to know whether older individuals have better memories than younger individuals. Using the datafile AgeWords.sav, compare whether college-aged individuals (on average) recall more words than middle school students on a memory test. Write out results using proper APA format as demonstrated in the guide. (5 points)
- We sought to compare whether there are age differences in the ability to maintain balance while concentrating. Young (n = 8) and elderly (n = 9) participants stood barefoot on a “force platform” and were asked to maintain a stable upright position and react as quickly as possible to an unpredictable noise by pressing ah and held button. The noise came randomly and participants were instructed to react as quickly as possible. The platform automatically measured how much each subject swayed in millimeters in both the forward/backward and the side-to-side directions.
- Using the datafile Balance.sav, did younger participants (on average) maintain their forward/backward balance better than elderly participants? Write out results using proper APA format as demonstrated in the guide. (5 points)
- Using the datafile Balance.sav, did younger participants (on average) maintain their side-to-side balance better than elderly participants? Write out results using proper APA format as demonstrated in the guide. (5 points)
- A number of studies have tested whether police officers are better than the average person at determining when someone is lying (Kassin & Fong, 1999; Meissner & Kassin, 2002). In the datafile LieDetection.sav, a sample of police officers and college students watched 20 videos of people either lying or telling the truth. After each video, participants were asked whether or not they thought the person was lying, and they rated how confident they were in their answer (on a scale from 1-10). Later, researchers calculated each participant’s accuracy (i.e., # of correct judgments, out of 20) and their mean confidence rating (across all 20 judgments).
- Did police officers produce more accurate (i.e., use the accuracy variable) judgments than college students? Write out results using proper APA format as demonstrated in the guide. (5 points)
- Were police officers more confident (i.e., use the confidence variable) in their ability to detect lies? Write out results using proper APA format as demonstrated in the guide. (5 points)
Copy and paste all of your output to the end of this lab. Do NOT attach a saved output file from SPSS; it will not be counted. Grading will be based on accurate analysis of the results and proper APA-style write-up.
QUALITY OF RESPONSE NO RESPONSE POOR / UNSATISFACTORY SATISFACTORY GOOD EXCELLENT Content (worth a maximum of 50% of the total points) Zero points: Student failed to submit the final paper. 20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. 30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. 40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. 50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. Use of Sources (worth a maximum of 20% of the total points). Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. 5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. 10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. 15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. 20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. Grammar (worth maximum of 20% of total points) Zero points: Student failed to submit the final paper. 5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors 10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors 15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. 20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. Structure of the Paper (worth 10% of total points) Zero points: Student failed to submit the final paper. 3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. 5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper 7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. 10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper.
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