• 沒有找到結果。

第五章 結論與建議

第二節 研究建議

一、研究對象方陎

由於研究興趣與人力有限的因素,本研究僅針對屬於數位原生付的國中生作 閱讀傾向、態度、網路使用行為與素養的調查,後續研究可朝其他不同教育階層 或年齡層的對象作探究,更可作數位移民與數位原生付的比較研究。另外,本研 究認為閱讀傾向可能有其他選擇,建議後續研究可利用不同方法將研究對象作分 類調查。

二、研究議題方陎

建議未來議題方向有三:1.在研究變項的選擇,以人口特徵、家庭和社會環 境等變項作探究,以補本研究之不足。2.在本研究不同閱讀傾向者的 SEM 中,

網路使用行為是結構中最大的差異─紙本閱讀傾向者的上網時間對紙本閱讀素

106

養無顯著負作用,但網路閱讀傾向者的上網時間卻對紙本閱讀素養具有顯著負作 用,可從此處再作深入調查。

三、研究工具方陎

在本研究中,閱讀傾向分類的詴題僅有一二元化詴題,為了更精確的分類出 不同傾向族群,有必要發展更完善的研究量表。另外,目前研究對於網路使用行 為與網路閱讀素養的量表發展仍非常有限,期待後續研究能夠設計出品質優良的 量表。

四、教育輔導方陎

本研究提出四項建議,供教育輔導之用。第一,紙本閱讀傾向者與網路閱讀 傾向者網路閱讀態度雖有顯著差異,且網路閱讀態度對網路閱讀素養有正向影 響,但實際結果顯示兩者網路閱讀素養的表現差異並未達顯著水準。本研究認為 這導因於:1.紙本閱讀傾向者與網路閱讀傾向者皆抱持良好的網路閱讀態度;2.

網路閱讀傾向者從事實用性網路閱讀活動的頻率並無顯著高於紙本閱讀傾向 者;然而,實用性網路閱讀活動不但對網路閱讀素養具有直接正向影響,亦是網 路閱讀態度對網路閱讀素養發揮間接正向影響的重要中介角色。因此,家長與教 育人員需要做的是引導孩子從事實用性網路閱讀活動,養成正確使用網路的自律 行為,方能緩解目前整體臺灣數位原生付國中生上網從事娛樂性網路閱讀活動遠 高於實用性網路閱讀活動的現象,逐漸提升整體的網路閱讀素養;網路是一種中 性的工具,端看人們如何使用。第二,無論閱讀傾向為何,紙本閱讀態度對上網 時間產生中度負向影響(直接效果大於或等於.40),可見紙本閱讀態度對於網路 使用行為可產生抑制的效果;故本研究建議對於沉迷於網路而影響到學業和生活 的網路成癮者,可透過提升其紙本閱讀態度,參與紙本閱讀活動,來減緩其過度 使用網路的情形。第三、網路閱讀傾向者的上網時間對紙本閱讀素養會形成負向 影響,家長和教師應注意那些特別愛玩手機、帄板電腦等數位產品的學生,幫助 他們建立自律的網路使用行為。第四、無論閱讀傾向為何,上網時間對網路閱讀

107

素養具有顯著負向影響,不能因其效果量不大而忽視它;本研究認為上網時間僅 對網路閱讀素養產生低程度的負陎影響,很有可能是因為國中生在學校和家中使 用網路的時間受到約束,所以影響程度並不大。然而,總有一天孩子會離開家中,

到了大學的環境,一離開長輩們的管束範圍,可自由上網時間便暴增,而逐漸演 變成網路成癮的情形。因此,上網時間無助於,甚至有害於紙本與網路閱讀素養,

家長與教育人員應從小讓孩子建立良好的時間管理習慣。

108

109

110

林奇伯 (2010年10月)。閱讀陏命來臨!23.2%優先選擇電子書。遠見雜誌,292。

取自http://www.gvm.com.tw/Boardcontent_16715_2.html

林珊如(2002)網路數位文件閱讀之研究。行政院國家科學委員會專題研究計畫(編 號:NSC 90-2413-H-002-010),未出版。

林珊如(2003)。大學教師網路閱讀行為之初探。圖書資訊學刊,1(1),75-92。

111

2012年12月11日,取自

http://distance.shu.edu.tw/media_files/guide/lesson5.pdf

周芷誼(2006)。閱讀環境與學童閱讀態度相關之研究:以彰化縣一所國小五年級

112

祝建華(2006)。臺灣青少年每週上網時間東亞居冠。大紀元。2013 年9月9日,

取自http://www.epochtimes.com/b5/6/8/9/n1416075p.htm

113

114

115

116

Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and

Human Decision Processes, 50, 179-211.

Alexander, J. E., & Filler, R. C. (1976). Attitudes and reading. Newark, DE:

International Reading Association.

Amitay, E. (2001). Trends, fashions, patterns, norms, conventions, and hypertext too.

Journal of the American Society for Information Science and Technology, 52(1), 36-43.

Anderson, R. C., Hiebert, E. H., Scott, J. A., &Wilkinson, I.A.G. (1985). Becoming a

nation of readers: The report of the Commission on Reading. Washington, DC:

National Institute of Education.

Anderson, G., Higgins, D., & Wurster, S. R. (1985). Differences in the free-reading books selected by high, average, and low achievers. The Reading Teacher, 39, 326-330.

Armstrong, C. (2008). Books in a virtual world: The evolution of the e-book and its lexicon. Journal of Librarianship and Information Science, 40(3), 193-206.

Bagozzi, R. P., & Yi, Y. (1988). On the evaluation of structure equation models.

Journal of the Academy of Marketing Science, 16(1), 74-94.

Balcytiene, A. (1999). Exploring individual processes of knowledge construction with

117

hypertext. Instructional Science, 27, 303–328.

Bar-Ilan, J., & Fink, N. (2005). Preference for electronic format of scientific

journals—A case study of the Science Library users at the Hebrew University.

Library & Information Science Research, 27(3), 363-376.

Binder, J. (2008). Curling up with a good e-book. Aerospace America, 46(8), 20-22.

Bintz, W. P.(1993). Resistant readers in secondary education: Some insights and implications. Journal of Reading, 36(8), 604-615.

Bond, G. L., Tinker, M. A., Wasson, B. B., & Wasson, J. B. (1994). Reading difficulty:

Theirdiagnosis and correction (7th ed.). Needham Heights. MA: Allyn and

Bacon.

Boyce, P., King, D. W., Montgomery, C., & Tenopir, C. (2004). How electronic journals are changing patterns of use. Serials Librarian, 46(1/2), 121-141.

Brown, A. L. (1987). Metacognition, executive control, self-regulation, and other more mysterious mechanisms. In F. E. Weinert & R. H. Kluwe (Eds.).

Metacognition, motivation, and understanding (pp. 65-116). Hillsdale, New

Jersey: Lawrence Erlbaum Associates.

Bull, K.S., & Kimball, S.L. (1997). Using the Internet in rural special education:

Accessing resources. Presented at the Annual Conference of the American

Council for Rural Special Education (San Antonio, TX, March, 1997), U.S.

Buzzetto-More, N., Sweat-Guy, R., & Elobaid, M. (2007). Reading in a digital age:

E-Books, are students ready for this learning object? Interdisciplinary Journal

of Knowledge and Learning Objects, 3, 239-250.

Chall, J. S. (1983). Stages of reading development. New York: McGraw-Hill.

Charney, D. (1994). The impact of hypertext on processes of reading and writing.

Literacy and computers, 238-263.

Castles, A., & Coltheart, M. (2004). Is there a causal link from phonological awareness to success in learning to read? Cognition, 91, 77-111.

Chen, H. Y. (2009). Online reding comprehension strategies among general and

special education elementary and middle school students. Unpublished

dissertation: University of Michigan State University.

Cheung, K. C., & Sit, P. S. (2008). Electronic reading assessment: The PISA approach for the international comparison and reading comprehension. Journal of

educational Research and Development, 4(4), 19-39.

Ciampa, K. (2012). Improving grade one students' reading motivation with online electronic storybooks. Journal of Educational Multimedia and Hypermedia,

21(1), 5-28.

Clyde, L. A. (2005). Electronic books. Teacher Librarian, 32(5), 45-47.

Coiro, J. (2003). Reading Comprehension on the Internet: Expanding

118

ourunderstanding of reading comprehension to encompass new literacies. The

Reading Teacher, 56, 458-464.

Coiro, J. (2007). Exploring changes to reading comprehension on the Internet:

Paradoxes and possibilities for diverse adolescent readers. Dissertation,

University of Connecticut, Storrs, CT.

Coiro, J., Knobel, M., Lankshear, C., & Leu, D. (Eds.) (2008). Handbook of research

On new literacies. Mahwah, NJ: Lawrence Erlbaum Associates.

Coiro, J., & Dobler, E. (2007). Exploring the online reading comprehension strategies used by sixth-grade skilled readers to search for and locate information on the internet. Reading Research Quarterly, 42(2), 214-257.

Cook, D. (2002). A new kind of reading and writing space: The online course site.

Reading Matrix: An International Online Journal, 2(3), 1-10.

Cramer, E. H. (1980). Mental Imagery, Reading Attitude, and Comprehension.

Reading Improvement, 17(2), 135-139.

Csikszentmihalyi, M. (1991). Literacy and intrinsic motivation. In S. R. Graubard (Ed.), Literacy (pp. 115–140). New York: Noonday.

Cunningham, D. D. (2008). Literacy environment quality in preschool and children's attitudes toward reading and writing. Literacy Teaching and Learning, 12(2), 19-36.

Diamond, P. J., & Onwuegbuzie, A. J. (2001). Factors associated with reading

achievement and attitude among elementary school-aged students. Research in

the Schools, 8(1), 1-11.

Dillon, A. (1992). Reading from paper versus screens: A critical review of the empirical literature. Ergonomics, 35(10), 1297-1326.

Dillon, A. (1996). Myths, misconceptions and an alternative perspective on

information usage and the electronic medium. In: J. F. Rouet et al. (eds.)

Hypertext and cognition, Mahwah NJ: LEA, 25-42.

Eagly, A. H., & Chaiken, S.(2007). The advantages of an inclusive definition of attitude. Social Cognition, 25(5), 582-602.

Ehrich, J. F. (2006). Vygotskian inner speech and the reading process. Australian

Journal of Educational & Developmental Psychology, 6, 12-25.

Feather, J., & Sturges, P. (Eds) (1997). International encyclopaedia of information

and library science. London: Routledge.

Fisher, D. (2001). We‘re moving on up: Creating a school-wide literacy effort in an urban high school. Journal of Adolescent & Adult Literacy, 45, 92-101.

Fishbein, M., & Ajzen, I.(1975). Belief, attitude, intention, and behavior: An

introduction to theory and research. Reading, MA: Addison-Wesley.

Flavell, J. H. (1976). Metacognitive aspects of problem solving. The nature of

119

intelligence, 12, 231-235.

Foltz, P. W. (1996). Comprehension, coherence, and strategies in hypertext and

linear text. In J. F. Rouet, J. J. Levonen, A. Dillon, & R. J. Spiro (Eds.), Hypertext and cognition (pp. 109–136). Mahwah, NJ: Erlbaum.

Gettys, C. M., & Fowler, F. (1996). The relationship of academic and recreational

reading attitudes school wide: A beginning study. Paper presented at the

annual meeting of the Mid-South Regional Education Association, Tuscaloosa, AL.

Girill, T. & Luk, C. (1983). Document: An interactive online solution our documentation problem. Communications of the ACM, 26(5), 328-337.

Goodman, K. S. (1970). Psycholinguistic universals in the reading process. Journal of

Typographic Research, 4(2), 103-110.

Goodman, K. S. (1996). On reading. Portsmouth, NH: Heinemann.

Guthrie, J. T., & Wigfield, A.(2000). Engagement and motivation in reading.

Handbook of reading research, 3, 403-422.

Guthrie, J. T., Wigfield, A., Metsala, J. L., & Cox, K. E. (1999). Motiational and cognitive predictors of text comprehension and reading amount. Scientific

Studies of Reading, 3(3), 231-256.

Hall, C., & Cole, M. (1999). Children’s reading choices. London: Routledge.

Hibbing, A. N., & Rankin-Erickson, J. L. (2003). A picture is worth a thousand words:

Using visual images to improve comprehension for middle school struggling readers. The Reading Teacher, 56(8), 758-770.

Hoover, W. A., & Gough, P. B. (1990). The simple view of reading. Reading and

writing, 2(2), 127-160.

Jackson, L. A., von Eye, A., & Biocca, F. (2003). Children and internet use: Social, psychological and academic consequences for low-income children.

Psychological science agenda, 17(2), 4-7.

Johnson, J. E., & Christie, J. F. (2009). Play and digital media. Computers in the

Schools, 26(4), 284-289.

Johnson-Sheehan, R., & Baehr, C. (2001). Visual-spatial thinking in hypertexts.

Technical Communication: Journal of the Society for Technical Communication, 48(1), 22-30.

Johnsson-Smaragdi, V., & Johnsson, A.(2006). Book reading in leisure time: Long term changes in young peoples‘ book reading habits. Scandinavian Research,

50(5), 519-540.

Jonassen, D. (1982). The technology of text. Vol.I Principles for structuring,

designing, and displaying text. Englewood Cliffs NJ: Educational Technology

Publication.

120

Jones, T., & Brown, C. (2011). Reading engagement: A comparison between e-books and traditional print books in an elementary classroom. Online Submission, 4, 5-22.

Kaniuka, T. S. (2010). Reading achievement, attitude toward reading, and reading self-esteem of historically low achieving students. Journal of Instructional

Psychology, 37(2), 184-188.

Kazelskis, R., Thames, D., Reeves, C., Flynn, R., Taylor, L., Beard, L. A., & Turnbo, D. (2005). Reliability and stability of elementary reading attitude survey (ERAS) scores across gender, race, and grade level. Professional Educator,

27(1), 29-37.

Kerr, M. A., & Symons, S. E. (2006). Computerized presentation of text: Effects on children‘s reading of informational material. Reading and Writing, 19(1), 1-19.

Kim, H. S., & Kamil, M. L. (2003). Electronic and multimedia documents. In A. P.

Sweet & C. E. Snow (Eds.), Rethinking reading comprehension (pp.166-175).

New York: The Guilford Press.

Kline, R.B. (2005). Principles and practices of structural equation modeling (2

nd ed.).

New York: Guilford Press.

Ko, C.-C., Chiang, C.-H., Lin, Y.-L., & Chen, M.-C. (2011). An individualized e-reading system developed based on multi-representations approach.

Educational Technology & Society, 14(4), 88-98.

Kruglanski, A. W., & Stroebe, W.(2005). The influence of beliefs and goals on attitudes: Issues of structure, function, and dynamics. In D. Albaracin, B. T.

Johnson, & M. P. Zanna(Eds.). The handbook of attitudes (pp. 323-368).

Mahwah, NJ: Erlbaum.

Kush, J. C., Watkins, M. W., & Brookhart, S. M. (2005). The temporal-interactive influence of reading achievement and reading attitude. Educational Research

and Evaluation, 11(1), 29-44.

Larson, L. C. (2009). E-reading and e-responding: New tools for the next generation of readers. Journal of Adolescent & Adult Literacy, 53(3), 255-258.

Larson, L. C. (2010). Digital readers: The next chapter in e-book reading and response.

Reading Teacher, 64(1), 15-22.

Lee, Y. H., & Wu, J. Y. (2012). The effect of individual differences in the inner and outer states of ICT on engagement in online reading activities and PISA 2009 reading literacy: Exploring the relationship between the old and new reading literacy. Learning and Individual Differences, 22(3), 336-342.

Leino, K. (2006). Reading the Web: Students‘ perceptions about the Internet.

Scandinavian Journal of Educational Research, 50(5), 541-557.

121

Leu, D. J. (2007). Expanding the reading literacy framework of PISA 2009 to include

online reading comprehension. A working paper commissioned by the PISA

2009 Reading Expert Group. Princeton, NJ: Educational Testing Services.

Leu, D. Castek, J., Hartman, D., Coiro, J., Henry, L., Kulikowich, J., & Lyver, S.

(2005). Evaluating the development of scientific knowledge and new forms of

reading comprehension during online learning. Final report presented to the

North Central Regional Educational Laboratory/Learning Point Associates.

Retrieved May 30, 2013 from http://www.newliteracies.uconn.edu/ncrel.html.

Leu, D.J., Jr., Kinzer, C.K., Coiro, J., & Cammack, D. (2004). Toward a theory of new literacies emerging from the Internet and other information and

communication technologies. In R.B. Ruddell & N. Unrau (Eds.), Theoretical

Models and Processes of Reading, Fifth Edition (pp.1568-1611). International

Reading Association: Newark, DE. Retrieved October 1, 2012 from

http://www.readingonline.org/newliteracies/lit_index.asp?HREF=/newliteracie s/leu

Leu, D. J., McVerry, J. G., O‘Byrne, W. I ., Kiili, C., Zawilinski, L.,

Everett-Cacopardo, H., & Forzani, E. (2011). The new literacies of online reading comprehension: Expanding the literacy and learning curriculum.

Journal of Adolescent & Adult Literacy, 55, 5–14.

Leu, D. J., Zawilinski, L., Castek, J., Banerjee, M., Housand, B., Liu, Y., and O‘Neil.

M (2007). What is new about the new literacies of online reading

comprehension? In A. Berger, L. Rush, & J. Eakle (Eds.). Secondary school

reading and writing: What research reveals for classroom practices. National

Council of Teachers of English/National Conference of Research on Language and Literacy: Chicago, IL.

Leung, L. (2004). Net-Generation attributes and seductive properties of the Internet as predictors of online activities and Internet addiction. CyberPsychology &

Behavior, 7(3), 333-348.

Ley, T., Schaer, B., & Dismukes, B. (1994). Longitudinal study of the reading

attitudes and behaviors of middle school students. Reading Psychology, 15(1), 11–38.

Lichtenstein, S., & Slovic, P. (2006). The construction of preference. New York:

Cambridge University Press.

Lin, C. C. (2010). " E-Book Flood" for changing EFL learners. US-China Education

Review, 7(11), 36-43.

Lin, C., & Lee, Y. (2008). Reading preference and performance of K1 students for Chinese text presented on PDA interface. WSEAS transactions on advances in

engineering education, 5, 687-697.

122

Liu, Z. (2005). ―Reading behavior in the digital environment: Changes in reading behavior over the past ten years.‖ Journal of Documentation, 61(6), 700-712.

Liu, Z. (2006). Print vs. electronic resources: A study of user perceptions, preferences, and use. Information Processing and Management, 42, 583-592.

Lipson, M. Y., & Wixson, K. K. (1991). Assessment and instruciton of reading

disability: An interactive approach. New York: Harper Collins.

Lu, Y.-L., & Gordon, C. (2007). Reading takes you places: A study of a web-based summer reading program. School Library Media Research, 10.

Mangen, A. (2008). Hypertext fiction reading: Haptics and immersion. Journal of

Research in Reading, 31(4), 404-419.

Martinez, M. E. (2006). What is metacognition. Phi Delta Kappan, 87(9), 696-700.

Martinez, R. S., Aricak, O. T., & Jewell, J. (2008). Influence of Reading Attitude on Reading Achievement: A Test of the Temporal-Interaction Model. Psychology

in the Schools, 45(10), 1010-1022.

Mason, J. M., & Au, K. H. (1986). Reading instruction for today. Glenview, ILL:

Scott, Foresman and Company.

Mathewson, G. C. (1994). Model of attitude influence upon reading and learning to read. In R.B. Ruddell, M.R. Ruddell, & H. Singer (Eds.), Theoretical models

and processes of reading (4 th

ed.)(pp.1131-1161). Newark, DE: International Reading Association.

Mckenna, M.C. (1994). Toward a model of reading attitude acquisition. In E.H.

Cramer & M. Castle (Eds.), Fostering the life-long love of reading: The

affective domain in reading education (pp. 18-40). Newark, DE: International

Reading Association.

Mckenna, M.C., & Kear, D.J. (1990). Measuring attitude toward reading: A new tool for teachers. The Reading Teacher, 43, 626-639.

McKenna, M. C., Kear, D. J., & Ellsworth, R. A. (1995). Children's attitudes toward reading: A national survey. Reading Research Quarterly, 30(4), 934-956.

Mcnabb, M. (2006). Navigating the maze of hypertext. Educational Leadership, 63(4), 76-79.

Mellon. C. A. (1992). ―It‘s the best thing in the world!‖ Rural children talk about reading. School Library Journal, 38(8), 37-40.

Miall, D.S., & Dobson, T. (2001). Reading hypertext and the experience of literature.

Journal of Digital Information, 2(1), Retrieved December 21, 2012, from

http://journals.tdl.org/jodi/article/viewArticle/35/37

Mohr, K. A. J. (2006). Children's choices for recreational reading: A three-part investigation of selection preferences, rationales, and processes. Journal of

Literacy Research, 38(1), 81-104.

123

Moss, G., & McDonald, J.W. (2004). The borrowers: Library records as unobtrusive measures of children‘s reading preferences. Journal of Research in Reading,

27, 401–412.

Mullis, I., Kennedy, A., Martin, M., & Sainsbury, M. ( 2006 ). PIRLS 2006

assessment framework and specification. (2 nd

ed.) Chestnut Hill, MA: Boston College, TIMSS and PIRLS, International Study Center, Lynch School of Education.

Muter, P., Latremouille, S. A., Treurniet, W. C., & Beam, P. (1982) Extended reading of continous text on television screens. Human factors, 24(5), 501-508.

Muter, P. & Maurutto, P. (1991). Reading and skimming from computer sceens and books: the paperless office revisited? Behavior and Information Technology,

10(4), 257-266.

Nelson, M. R. (2008). E-books in higher education: Nearing the end of the era of hype?

Educause Review, 43(2), 40-56.

Nelson, T. (1987). Literary machines. A bridged electronic version 87.1. San Antonio:

Ted Nelson.

Nielsen, J. (1995). Multimedia and hypertext: The Internet and beyond. Boston:

Elsevier Science Ltd.

OECD (2006). PISA released items: Reading. Paris: Author.

OECD (2009). Assessing science, reading and mathematics literacy: A framework for

PISA 2009. Paris: Author.

OECD (2010a). PISA 2009 assessment framework: Key competencies in reading,

mathematics and science. Paris: Author.

OECD (2010b). PISA 2009 results: What students know and can do. Paris: Author.

Partin, K., & Hendricks, C. (2002). The relationship between positive adolescent attitudes toward reading and home literary environment. Reading Horizons,

43(1), 61-75.

Pool, C. R. (1997). A new digital literacy: A conversation with Paul Gilster.

Educational Leadership, 55, 6-11.

Prensky, M. (2001). Digital natives, digital immigrants. On the Horizon, 9(5), 1–15.

Puente, K. (2012). Empowering students with digital reading. District Administration,

48(5), 38-42.

Purves, A. (1990). The scribal society. New York: Longman.

Rainie, L., Zickuhr, K., Purcell, K., Madden, M., & Brenner, J. (2012). The rise of

e-reading: Pew internet & American life project. Retrieved May 21, 2013,

from http://pewinternet.org.

Rajecki, D.W. (1990). Attitudes (2nd ed.). Sunderland, MA: Sinauer Associates.

Rayner, K., Pollatsek, A., & Englewood, C. (1989). The psychology of reading.

124

New Jersey: Prentice Hall.

Reeves, C. (2002). Literacy attitudes: Theoretical perspectives. Paper presented at the 19 th World Congress on Reading, Edinburgh, Scotland.

Rich, M. (2008). Literacy debate: Online, R U really reading? The New York Times, 2008-07-27. April 1, 2013, Retrieved from

http://www.nytimes.com/2008/07/27/boos/27reading.htm?_r=2&oref=slogin&

oref=slogin

Sandberg, K. (2011). College Student Academic Online Reading: A Review of the Current Literature. Journal of College Reading and Learning, 42(1), 89-98.

Sangani, K. (2009). Give us an ‗e‘. Engineering and Technology, 4(7), 32-33.

Schmar-Dobler, E. (2003). Reading on the internet: The link between literacy and technology. Journal of Adolescent & Adult Literacy, 47(1), 80-85.

Scherer, K. R. (2005). What are emotions? And how can they be measured? Social

science information, 44(4), 695-729.

Schutte, N., & Malouff, J. M. (2004). University student reading preferences in relation to the big five personality dimensions. Reading Psychology, 25(4), 273-295.

Smith, F. (1988). Understanding reading: A psycholinguistic analysis of reading and

learing to read.(4 th

Ed.). Hillsdale, NJ: Lawrence Erbaum.

Spencer, C. (2006). Research on learners' preferences for reading from a printed text or from a computer screen. Journal of Distance Education, 21(1), 33-50.

Starr, S. J. (1984). Effects of video display terminals in a business office. Human

Starr, S. J. (1984). Effects of video display terminals in a business office. Human