"ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report." - Information and Links:

ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report. - Info and Reading Options

"ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report." and the language of the book is English.


“ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” Metadata:

  • Title: ➤  ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.
  • Author:
  • Language: English

Edition Identifiers:

  • Internet Archive ID: ERIC_ED021444

AI-generated Review of “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.”:


"ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report." Description:

The Internet Archive:

Although there has been previous research concerned with image size, brightness, and contrast in projection standards, the work has lacked careful conceptualization. In this study, size was measured in terms of the visual angle subtended by the material, brightness was stated in foot-lamberts, and contrast was defined as the ratio of the difference between the brightness of the background and the object to the brightness of the background. The effects of these independent variables were assessed by exposing three seventh graders (one boy and two girls) to all 125 experimental conditions in 20 half hour sessions. The subjects matched patterns on the upper half of a slide with one of two on the lower half. The criterion measures were reaction time and correctness of response. Brightness did not affect either of these criteria. However, reaction time tended to be shorter with an increase in visual angle and longer for minimal levels of contrast. Correct responses were largest for the middle value of visual angle and for higher levels of contrast. An inverse relationship between angle and contrast produced a maximum number of correct responses. Application of these results in the classroom is difficult in view of space and equipment limitations. (PM)

Read “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.”:

Read “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” by choosing from the options below.

Available Downloads for “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.”:

"ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report." is available for download from The Internet Archive in "texts" format, the size of the file-s is: 105.16 Mbs, and the file-s went public at Mon Nov 30 2015.

Legal and Safety Notes

Copyright Disclaimer and Liability Limitation:

A. Automated Content Display
The creation of this page is fully automated. All data, including text, images, and links, is displayed exactly as received from its original source, without any modification, alteration, or verification. We do not claim ownership of, nor assume any responsibility for, the accuracy or legality of this content.

B. Liability Disclaimer for External Content
The files provided below are solely the responsibility of their respective originators. We disclaim any and all liability, whether direct or indirect, for the content, accuracy, legality, or any other aspect of these files. By using this website, you acknowledge that we have no control over, nor endorse, the content hosted by external sources.

C. Inquiries and Disputes
For any inquiries, concerns, or issues related to the content displayed, including potential copyright claims, please contact the original source or provider of the files directly. We are not responsible for resolving any content-related disputes or claims of intellectual property infringement.

D. No Copyright Ownership
We do not claim ownership of any intellectual property contained in the files or data displayed on this website. All copyrights, trademarks, and other intellectual property rights remain the sole property of their respective owners. If you believe that content displayed on this website infringes upon your intellectual property rights, please contact the original content provider directly.

E. Fair Use Notice
Some content displayed on this website may fall under the "fair use" provisions of copyright law for purposes such as commentary, criticism, news reporting, research, or educational purposes. If you believe any content violates fair use guidelines, please reach out directly to the original source of the content for resolution.

Virus Scanning for Your Peace of Mind:

The files provided below have already been scanned for viruses by their original source. However, if you’d like to double-check before downloading, you can easily scan them yourself using the following steps:

How to scan a direct download link for viruses:

  • 1- Copy the direct link to the file you want to download (don’t open it yet).
    • (a free online tool) and paste the direct link into the provided field to start the scan.
  • 2- Visit VirusTotal (a free online tool) and paste the direct link into the provided field to start the scan.
  • 3- VirusTotal will scan the file using multiple antivirus vendors to detect any potential threats.
  • 4- Once the scan confirms the file is safe, you can proceed to download it with confidence and enjoy your content.

Available Downloads

  • Source: Internet Archive
  • Internet Archive Link: Archive.org page
  • All Files are Available: Yes
  • Number of Files: 13
  • Number of Available Files: 13
  • Added Date: 2015-11-30 17:55:33
  • PPI (Pixels Per Inch): 600
  • OCR: ABBYY FineReader 11.0

Available Files:

1- Text PDF

  • File origin: original
  • File Format: Text PDF
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444.pdf
  • Direct Link: Click here

2- Metadata

  • File origin: original
  • File Format: Metadata
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_files.xml
  • Direct Link: Click here

3- Metadata

  • File origin: original
  • File Format: Metadata
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_meta.sqlite
  • Direct Link: Click here

4- Metadata

  • File origin: original
  • File Format: Metadata
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_meta.xml
  • Direct Link: Click here

5- JPEG Thumb

  • File origin: original
  • File Format: JPEG Thumb
  • File Size: 0.00 Mbs
  • File Name: __ia_thumb.jpg
  • Direct Link: Click here

6- DjVu

  • File origin: derivative
  • File Format: DjVu
  • File Size: 0.01 Mbs
  • File Name: ERIC_ED021444.djvu
  • Direct Link: Click here

7- Animated GIF

  • File origin: derivative
  • File Format: Animated GIF
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444.gif
  • Direct Link: Click here

8- Abbyy GZ

  • File origin: derivative
  • File Format: Abbyy GZ
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_abbyy.gz
  • Direct Link: Click here

9- DjVuTXT

  • File origin: derivative
  • File Format: DjVuTXT
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_djvu.txt
  • Direct Link: Click here

10- Djvu XML

  • File origin: derivative
  • File Format: Djvu XML
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_djvu.xml
  • Direct Link: Click here

11- Single Page Processed JP2 ZIP

  • File origin: derivative
  • File Format: Single Page Processed JP2 ZIP
  • File Size: 0.09 Mbs
  • File Name: ERIC_ED021444_jp2.zip
  • Direct Link: Click here

12- Scandata

  • File origin: derivative
  • File Format: Scandata
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_scandata.xml
  • Direct Link: Click here

13- Archive BitTorrent

  • File origin: metadata
  • File Format: Archive BitTorrent
  • File Size: 0.00 Mbs
  • File Name: ERIC_ED021444_archive.torrent
  • Direct Link: Click here

Search for “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” downloads:

Visit our Downloads Search page to see if downloads are available.

Find “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” in Libraries Near You:

Read or borrow “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” from your local library.

Buy “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” online:

Shop for “ERIC ED021444: An Exploratory Analysis Of Projection-Standard Variables (Screen Size, Image Size And Image Contrast) In Terms Of Their Effects On The Speed And Accuracy Of Discrimination. Final Report.” on popular online marketplaces.


Related Books