Preamble, underline fix (#1)

* More preamble

* Fix for dangling underline

README.md

@@ -8,16 +8,23 @@ Hi Friend! This is an Experiment that is friendly for use in the [Experiment Fac
 
 # The 5-Minute Stroop
 
-This is a derivative of the default Experiment Factory Stroop task, which was designed to provide a reliable and (statistically) powerful way to capture the Stroop phenomenon in a short amount of time. This task was designed with the following considerations in mind:
+The 5-minute Stroop is designed to provide a reliable and (statistically) powerful way to capture the Stroop phenomenon in a short amount of time. 
+
+Brief versions of cognitive tasks may be useful in cases where researchers are concerned about: (1) participant fatigue or attrition, (2) the costs of doing research and paying participants (for example, on MTurk participants are paid commensurate with the time they spend engaged with the research, and so there is an incentive to minimize the demands placed on their time), or (3) where there simply isn't a need for a longer task (in which case, a shorter task is more respectful of participants' time).
+
+With that in mind, this task was created with the following design considerations:
 
 - The task should generate the Stroop phenomenon (slower response times for incongruent vs. congruent stimuli) with a medium-to-large effect size
 - The task should be user-friendly, accessible, and provide a user experience that is not unpleasant
 - The task should take approximately 5 minutes to complete
 
-To this end, the following changes were made to the default Experiment Factory Stroop task:
+To achieve this, the following changes were made to the default Experiment Factory Stroop task:
 
 ## Changes for Statistical Power / Effect
+
 - The ratio of congruent:incongruent trials was increased from 1:1 to 2:1, since proportion congruency has been shown in some past research to increase the size of the Stroop effect
+- Attention checks were added to the test phase, allowing researchers to more clearly identify "bad subjects"
+
 
 ## Changes for Accessibility and User-Friendliness
 - Colors were selected to maximize accessibility for individuals with color-blindness (Accessibility of colors was confirmed using a color-blindness simulator, Color Oracle [http://colororacle.org])
@@ -27,4 +34,4 @@ To this end, the following changes were made to the default Experiment Factory S
 ## Changes for Brevity
 - In this version, when a response is entered the trial ends and feedback is displayed right away (Previously, trials had a fixed duration)
 - The number of practice trials was reduced from 24 to 18
-- The number of test trials was reduced from 96 to 72
+- The number of test trials was reduced from 96 to 72

experiment.js

@@ -258,7 +258,7 @@ var instructions_block = {
 		trial_id: "instruction"
 	},
 	pages: [
-		'<div class = centerbox style="height:80vh"><p class = block-text>In this game you will see "color" words (RED, BLUE, GREEN, YELLOW) appear one at a time. The "ink" of the words also will be colored. For example, you may see: <span class = "large" style = "color:#f64747;font-weight:bold">RED</span>, <span class = "large" style = "color:#00bfff;font-weight:bold">BLUE</span> or <span class = "large" style = "color:#f64747;font-weight:bold">BLUE</span>.</p><p class = block-text>Your task is to press the button corresponding to the <strong><u> font color </u></strong> of the word. Respond as <u><strong>quickly and accurately</strong></u> as possible. The response keys are as follows:</p>' +
+		'<div class = centerbox style="height:80vh"><p class = block-text>In this game you will see "color" words (RED, BLUE, GREEN, YELLOW) appear one at a time. The "ink" of the words also will be colored. For example, you may see: <span class = "large" style = "color:#f64747;font-weight:bold">RED</span>, <span class = "large" style = "color:#00bfff;font-weight:bold">BLUE</span> or <span class = "large" style = "color:#f64747;font-weight:bold">BLUE</span>.</p><p class = block-text>Your task is to press the button corresponding to the <strong><u>font color</u></strong> of the word. Respond as <u><strong>quickly and accurately</strong></u> as possible. The response keys are as follows:</p>' +
 		response_keys + '</div>'
 	],
 	allow_keys: false,