# Tag Info

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Current evidence suggests that internet access is not weakening memory, but changing what information is prioritized. This study referenced below suggests that when people expect to have future access to information, they are less likely to remember the information itself and more likely to remember where or how that information can be found. Google ...

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Firmin et al. (2008) tested the validity of a handful of online IQ tests by having college students complete IQ tests at three different websites and also complete a validated lab measure, the Reynolds Intellectual Assessment Scales (RIAS). They found that there were moderate correlations ($r$ values were around 0.4 to 0.5) between some of the online tests ...

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Short answer: The data is likely to be noisier, the absolute reaction time can't be trusted, but given enough power (which is easy to obtain on the Internet) relative reaction time differences should be similar to those in the lab. However, web-based reaction time studies might pose other problems, because you have less control over stimulus presentation and ...

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There are a few factors that could contribute to differences between online versus in-lab reaction time measurement. Hardware variation Participants in an online experiment will use their own computers to complete the task, which will result in lots of variation in hardware. Many studies have looked at how hardware variations affect response time ...

4

Another option is ScriptingRT. It's open source and fairly easy to use. The experiments are designed via a script language and then compiled into Flash apps. ScriptingRT is designed to measure reaction time differences in the millisecond range. Schubert et al. (2013) report comparisons with other response time programs (e.g., DMDX, e-prime, Inquisit, see ...

4

List presented alphabetically Cambridge Brain Sciences (cambridgebrainsciences.com) Several "brain-training" type experiments including span tasks, mental rotation, and paired associate memory. Some tests require free registration on the site to complete. Data from the tests may be used for research purposes. Created by Adam Hampshire and Adrian Owen at ...

4

Amazon Mechanical Turk is perfect for something like this. In fact, tagging content is one of their default project types, so you should be able to just load in your images and use their template for tagging. If you haven't seen it before, MTurk is basically a labor marketplace for very small tasks. It works best for paying people a few cents to complete ...

3

We just released a beta version of Tatool Web based on JavaScript and HTML 5 which allows for running web experiments in the browser and measuring reaction times. You can check it out on www.tatool-web.com and of course it's open source. http://www.tatool-web.com

3

We cover a discussion on this in an article we've submitted for peer-review. Here is the preprint. I will cite this stackExchange question/answers in the manuscript (post peer review now) as there are some lovely discussions going on, and doubtless, more to follow. Tangentially relevant to this discussion is a simulation we did in the paper exploring how ...

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A relatively new site for subject recruitment online is Prolific Academic. It is a Mechanical Turk competitor targeted at the academic market. It offers some features that mturk doesn't that may be useful for researchers, such as more in depth pre-screening and demographics information. A potential negative of the site is that they currently require a ...

2

TurkPrime.com offers many features for using MTurk through a web interface. You can exclude and include workers, email them, restart survey and more. You can also create an account with SurveyComet.com if you do not reside in the US to find workers for surveys that you want to run. You can limit the workers by demographic which I have found to be extremely ...

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You may want to take a look at SurveyComet.com and TurkPrime.com. Both offer a pretty nice set of tools to run externally hosted surveys (like on Qualtrics and SurveyMonkey) and allow you to create follow up surveys, exclude previous workers, have specific demographic Panels and much more. A long survey can be broken into two parts. Launch part 1 and later ...

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Inquisit is a tool for running online psychological experiments. It has a huge task library. A quick look says that they have: 6 different stroop tasks. E.g., http://www.millisecond.com/download/library/Stroop/FoodStroop/ N-back http://www.millisecond.com/download/library/NBack/ Heaps of IAT examples: ...

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This is probably a bit old but there is a free iOS app called the PIEL Survey. It is in the App store. There is a web site which explains how to set up Experience Sampling surveys.

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I believe it has to do with two main factors: 1) Emotional response to one of the topics Consider the case where a webpage or paragraph of text contains multiple topics. Each one with different emotional response from the reader: Topic 1: X____| Topic 2: XX___| Topic 3: X____| Topic 4: XXXXXXXXX Topic 5: XX___| Where the number of X's is how strong the ...

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I've been developing stato.de, an online platform to run HTML5/Javascript experiments, recruit participants via email, Facebook, or Twitter, and collect and evaluate results in real time on any web browser. Please see Mental Rotation for a demo that works on phones, tablets, and desktops; it does not require signup.

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Depending on how you collect the data, reaction times collected "online" will likely be different from those collected "on-site". When considering reaction times, it is important to decide if the reaction time is being used as a trigger, as the time to a response, or the difference in the time to response. Consider an experiment which displays a random ...

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