We've got a sexy working demo (check out the video on the linked-to page), and are trying to raise the funds via Kickstarter to bring it to market.
No, greater than. Why do you think so many companies lose money?
The profitable ones have executives smart enough to keep their mouths shut.
The courts recognize intent. If you're sharing a paragraph of a book with others with the intent to discuss its impact on modern society, that's fine.
If you're sharing the same paragraph with the intent of combining it with other paragraphs hosted by different people, that's copyright infringement.
"A fool and his money will soon boost the economy."
Nice. Finally a good post. This is a fantastic idea: you have a chance to find solid, hard, evidence of something that most people (myself included) believe doesn't exist, and much more importantly, teach people about the scientific method, critical thinking, electromagnetism, and so much more.
There's about two good suggestions here in the comments: The guy talking about infrasound, and the guy who said find an objectively testable prediction. The latter especially is right on the money. What, exactly, constitutes evidence of a ghost? EM? How will you control for cell phones, cameras, faulty wiring, etc.? Temperature? How will you control for drafts? A "feeling" in one particular area? How will you control for infrasound? Include all family/friends in this stage, it's critical that they approve the criteria.
Once you have a list of criteria which suggest the presence of a ghost, establish "control" areas in the house which feature non-supernatural causes to each of these criteria. Keep this a secret from your family/friends. For example, lots of old industrial fans generate infrasound. Set one up behind a door or otherwise out of sight. There's lot of other fun things you can do, too: Grab a sound file from System Shock or Amnesia: Dark Descent and have it play on a hidden speaker system when people are nearby.
Now, the tricky part. Take your family/friends on a bunch of tours around the house. Do this in several small groups, and have each group fill out a quick questionare about the "hauntedness" of each room in the house. Bring along an infrasound detector (someone suggested a microphone, make sure it can record sounds As you've probably guessed, this is an experiment-in-an-experiment: You're testing your family members' willingness to believe in ghosts (hence the surveys), by taking them on a "debunking" expedition. Once you've found everything possible and eliminated it, take them on another tour, this time activating the planted ghost generating equipment - sound effects, infrasound, etc. Make a big deal about not being able to identify the sources. You should probably do this before rather than after with one group, just to better control the experiment.
Anyway, at the end of all this, you'll have tons of data: you can go over, bit by bit, the recordings and make what you will from them (people will of course say that these do not disprove ghosts). But, you can also compare people's surveys on "hauntedness" from both with and without the planted evidence. Since you made a big deal about not being able to find anything the second time around, people should really think the place is haunted. Compare the results of the surveys: BAM: you've just shown that people only believe in ghosts because they can't find a rational explanation for something. Or: BAM: you've just shown that people will still believe in ghosts when they find a rational explanation for something. Win/win for science, doesn't matter whether ghosts are real or not.
This is probably a little more over-the-top than you were looking for, but if you actually go through with it, you could probably get it published in a psychology journal. A much lower budget version would be to randomize people into two groups, one which tries to eliminate the stuff Artifakt listed above and finds causes (even planted "causes"), and another which searches but can't find anything. Compare surveys between the two groups. At any rate, you should report back to us on what you do find (about your friends/family. I think I can predict what you'll find for evidence on ghosts).
In case you're serious, a T-test is a very simple statistical test used when you have two groups of subjects and want to know if there's a statistically significant difference between them. AC was incorrect to say that this article used just a simple T-test, though. It actually uses Stouffer’s Z method, which is a way of combining results from several studies (in this case a bunch of difference sub experiments) to support a single hypothesis. I have never worked with Stouffer’s Z method, so I can't really comment on it's strengths and weaknesses.
The actual experimental design of the experiments was to take a well known psychology paradigm and run it backwards: training someone on a word list after they have already taken the test on it, for example.
This is probably correct. PubMed: 98% advanced
Can anyone figure out why science is so much more "advanced" than Nature? Both seem pretty similar to me.
Oh, and by way of a control group:
When it comes to robots, the means justify the ends.
In accordance with the rule of cool, anyway.