Technology Tradeoffs : Learning Curve versus Power

		Learning curve
		Shallow	Medium	Steep
Power	Low	HTML Forms
	Medium		Perl PHP JavaScript	HTML5/JavaScript
	High			Flash Java

• Who can and will use the media?
• Who cannot or will not use the media?
  • Issues of external vs. internal validity
• Will this impact my results?
  • Will usage depend upon condition?
• If download time or complexity varies depending upon condition you have a confound
• Test! Test! Test!
• Browser bugs!
• Consider is the web the best choice: not the easiest choice

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