Polygraph experts evaluating charts<\/figcaption><\/figure>\n\n\n\nChart Evaluation<\/h2>\n\n\n\n An entire polygraph test can last anywhere from 1 to 3 hours. Some can take as long as 4 hours, while others can be no longer than 30 minutes to complete. It will depend on factors such as the purpose of the lie detector examination, the policy of the service provider, and the training and experience of the polygraph examiner himself or herself.<\/p>\n\n\n\n
Examiners are strapped to a polygraph machine for just a fraction of the time, usually 15 to 20 minutes only.<\/p>\n\n\n\n
One of the most time-consuming parts of a lie detector exam is what’s referred to as the post-test phase. Just like what the name suggests, this takes place after the question and answer portion of the test.<\/p>\n\n\n\n
It’s during the post-test phase that a critical part of polygraph testing takes place. And it’s none other than the collection, analysis and interpretation of data recorded by the instrument. When examining available information to derive a chart score, a polygraph examiner may use one or a combination of procedures:<\/p>\n\n\n\n
Global evaluation<\/h3>\n\n\n\n Besides data recorded by the lie detector machine while it’s hooked up to the examinee, the examiner also employs behavioral data. Since he or she will also have to rely on personal observations of the examinee, most especially the body language, it’s important for the polygraph examiner to have the necessary training and ample experience.<\/p>\n\n\n\n
Numerical method<\/h3>\n\n\n\n One of the numerical scoring methods used by examiners is referred to as the 7-position numerical analysis scale. In this, changes in the signals at each spot (relevant question) are compared to the signals at the nearest control questions. Values are assigned to the differences between the responses, ranging from -3 to +3.<\/p>\n\n\n\n
Computerized algorithm<\/h3>\n\n\n\n These days, different computerized polygraph systems are being used in the US for chart evaluation. It will depend on the brand or model of the lie detector machine. One example of a system employed is the Computerized Polygraph System (CPS), whose algorithm is the product of research conducted at the University of Utah’s psychology lab.<\/p>\n\n\n\n
As mentioned earlier, it’s possible for a polygraph examiner to rely on only one or a combination of the above-mentioned methods in order to come up with an accurate and reliable examination result.<\/p>\n\n\n\n
Because making sense out of the various physiologic processes collated by a polygraph machine isn’t that simple, it’s very much unlikely that you will get a result that you can count on from the use of a lie detector home test kit, including most especially the kinds that are only meant to add some fun and excitement to parties.<\/p>\n\n\n\n
It’s true that there are more sophisticated polygraph instrument kits for home use, such as the kinds that plug into laptops and come with companion software tools that need to be installed.<\/p>\n\n\n\n
However, they have none of what traditional polygraph tests have: a trained and experienced examiner.<\/p>\n\n\n\n
As discussed above, there are different chart-scoring methods used by experts in the field of lie detector testing in order to determine whether a person is being truthful or non-truthful. And two of them require a more subjective approach to evaluating the readings, and they are global evaluation and the numerical method.<\/p>\n\n\n\n
Unless the software tools that accompany some polygraph home test kits are developed by individuals with actual training and experience that the manufacturers of professional computerized polygraph equipment used by polygraph exam providers these days, then the outcome should be taken with a grain of salt.<\/p>\n\n\n\nhome lie detector<\/figcaption><\/figure>\n\n\n\nLie Detector Apps<\/h2>\n\n\n\n The smartphone of today is a far cry from the DynaTAC, the very first cellular phone by Motorola, which came out in 1984. Measuring 9 inches tall and weighing 2.5 pounds, calling was all that it could do \u2014 it allowed around 35 minutes of talk time before its rechargeable battery, which weighed 1.7 pounds, ran out of juice.<\/p>\n\n\n\n
Installing apps can turn your mobile phone into all kinds of things, from a personal assistant, surveillance camera, handheld gaming console, Wi-Fi tethering device to social media hub.<\/p>\n\n\n\n
And now, it can also be used as a lie detector test that you can take anywhere and use anytime for anyone.<\/p>\n\n\n\n
First things first: the vast majority of lie detector test apps you can download and install on your smartphone are for fun only. <\/p>\n\n\n\n
While it’s not uncommon for most of them to require users to press their fingertips against the screen during the examination, these apps simply come up with answers randomly \u2014 either you are telling the truth or lying.<\/p>\n\n\n\n
A Toronto-based app developer, however, claims that it’s developing an app that uses the camera of a smartphone to detect changes in the blood flow in the face of the examinee, based upon which, allegedly, blood pressure and heart rate changes can be detected, thus allowing the app to determine whether the person is guilty or not.<\/p>\n\n\n\n
Looking at your smartphone’s camera for 30 seconds, according to the developer, is all it takes for the app to be able to measure various physiologic changes in you.<\/p>\n\n\n\n
Some app developers, based on independent studies they have conducted, claim that it can take a while for people who are being deceitful to answer a question.<\/p>\n\n\n\n
How you interact with your smartphone’s screen can be a determining factor, too, they add.<\/p>\n\n\n\n
In one study, for instance, participants were asked to play a mobile dice game. While the players were not encouraged to lie, they were rewarded based on their reported scores. The researchers discovered that those who were truthful when reporting scores tapped so much closer to the center of the display panel.<\/p>\n\n\n\n
Just Before You Buy a Lie Detector Home Test Kit<\/h2>\n\n\n\n Some lie detector home test instruments are so sophisticated that they come with a number of sensors and can connect to laptops and use proprietary software tools, too. But then there are also those that are mere toys.<\/p>\n\n\n\n
No matter the brand, model, claims and cost, don’t take a home-use polygraph kit seriously.<\/p>\n\n\n\n
Ensure that it will be used only for the purpose of having some fun and excitement each time you take it out of its box. Refrain from assuming that it can predict a person’s truthfulness or deceitfulness as accurately and reliably as a professional polygraph machine and with the aid of a trained and experienced examiner.<\/p>\n\n\n\n
Read Next: Can You Beat a Polygraph Test?<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"Home lie detector tests, like their name suggests, are polygraphs for home use. Anyone who suspects someone of being deceitful may carry it out \u2014 no need to have a professional polygraph examiner around. But…<\/p>\n","protected":false},"author":2,"featured_media":2323,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/posts\/2308"}],"collection":[{"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/comments?post=2308"}],"version-history":[{"count":5,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/posts\/2308\/revisions"}],"predecessor-version":[{"id":2762,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/posts\/2308\/revisions\/2762"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/media\/2323"}],"wp:attachment":[{"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/media?parent=2308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/categories?post=2308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truthorlie.com\/wp-json\/wp\/v2\/tags?post=2308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}