Speaker 1: Hi, in this video I'll be using Grammarly's plagiarism checker and then I will compare it to Turnitin and Quillbot. Alright, so very briefly, Grammarly provides a free plagiarism checker. It says it compares it to 16 billion webpages. I'm going to upload my document, which I've already done. Here is the document. It's just over 2,000 words and I say scan for plagiarism. According to Grammarly and its comparison of what it claims is 16 billion webpages, it says there's no plagiarism found. The exact same document uploaded onto Quillbot gives this result. It comes up with a 46% match. 21.7% is considered identical verbatim copying, while 24.3% is considered minor changes, which means that quite a lot of the content is the same, it's just maybe a few words here and there are changed, maybe somebody used synonyms. So, according to Quillbot, we can see that large portions of the data are highlighted and here are the sources. I can even show you the sources of where the text was copied from. And Quillbot has done a pretty good job of locating the original sources where the text was copied from. So, one can go through the text and see the original sources. So, here we can see as I scroll further down, we can see there's quite a bit of highlighting, almost this entire paragraph is highlighted. So, Quillbot's showing that... quite a lot of the content is directly copied. Now, here's Turnitin's results for the exact same text that was put through Turnitin, coming up with a percentage of 64%. We can see that a lot of the content has direct copying and or some sort of paraphrasing. And there we can see that some of it is word-for-word verbatim copying. Now, Turnitin also scans the student repository, which means that it scans the submissions that take place at universities where Turnitin is used. So, if I switch off the student repository and kind of... and just compare it to sources that are in the public domain, the similarity goes down to 53%, but still higher than Quillbot, and still far higher than Grammarly, because Grammarly said there was no plagiarism. All right, so maybe that was just a fluke result. Let's try another one. All right, so here I've got another text, which is also a couple of pages, and I know that it has been copied from several places. It's on the internet, and if I scan for plagiarism, let's have a look at what this free plagiarism checker provides. It says, no plagiarism found. The exact same text submitted by Turnitin comes up with a 64% similarity score. You can see there are all the sources where apparently this text was copied from. So, yes, this would definitely be flagged as possibly plagiarized. Okay, now what I'm going to do is I'm going to copy content. That is 100% copied from one source on the internet. So it is word for word, no changes, no interleaving, literally word for word copied from the source over here. I've taken paragraph after paragraph after paragraph and just pasted it directly into Grammarly, and I've pasted it into here, not the entire article, but a good couple of pages, and I'm going to say scan for plagiarism, and let's see what Grammarly provides. Right, running the test, and it says no plagiarism found. Now, what I'm going to do is I'm just going to press the back button here, and there's all the text. You can see that there's no funny business going on here. I literally just pasted that text, and then I'm going to say scan again. And the reason I'm going to say scan again is because now, look at that, now it does seem to find it. And why I'm doing this is because I did this test twice, and over here is the content, and I'm going to paste it in again, and when I scan it, it says no plagiarism. And I'm just going to leave this text here for a little bit of time, and then I'm going to say scan again, and it might come up with plagiarism found. Oh, no, it still says no plagiarism found. But it did also say plagiarism was found, and then I ran it again, and then it said it wasn't found, and then I ran it in a brand new web page, and it says it wasn't found. And just for your reference, this is the exact same text running through Turnitin, and you can see that the similarity score here is 99%. This would be plagiarized, academic misconduct, whatever you want to call it, verbatim copying directly from the source. And this is 1,748 words. It's not like just a few sentences were copied. This was paragraph after paragraph was copied. Right, I'm now going to do a final test, and that is to upload an entire article. This is a conference paper. It is eight pages. It is over eight pages. It's over 8,000 words. And this is pretty much the exact same version that is in the public domain. So there, it's available on ResearchGate, and also published over here in the IEEE library. So I'm going to upload the file, and I'm going to say scan for plagiarism. Now, something that concerns me is that it provides the results so quickly. But anyway, it says no plagiarism found. And according to Turnitin, it's 100% copied. So this would be a verbatim, word-for-word copying, and it's eight pages, over 8,000 words. There are the sources where Turnitin located it. Not difficult to find. Right, and if I just show you the result on QuillBot, the first thing you might notice is that it takes a bit of time to do the plagiarism assessment. And just having a look at what QuillBot finds, you can see that it finds 91.2% as identical. And there we can see the text being completely shared. And there we can see the text being completely shared. And there we can see the text being completely shared. And there we can see the text being completely shaded in. And obviously, because it is copied directly, it's my own work, but it's already in the public domain. So it should come up with 100%, but 91.4% is fair enough. So just to sum up, the Grammarly plagiarism checker, I ran four files through it. All of them came up with no plagiarism. One of them said plagiarism. Then when I ran the test again, it said no plagiarism. Then I ran it again, it said no plagiarism. So in my mind, all of the tests said no plagiarism. If you are going to be relying on the Grammarly plagiarism checker, just be aware that it doesn't necessarily pick up everything because I've just shown the Coolbot and the Turnitin picking up a lot more things. In fact, actually picking up something. And just something to consider about Coolbot, I noticed that the sources it located are free sources. What I mean by that is this is not a journal or a paid site. While Turnitin actually located the publication site, the site that hosts the article. And a site such as this often requires payment or you have to log in via your institution to view the article. So just be aware of that. Just be aware that Coolbot and Turnitin are not identical. There are differences between the two. Thanks for watching and cheers.