Understanding LSAT Logic

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New videos now available! Check out the updated series for the August 2024 (and beyond) test here:
• The New Insight LSAT P...
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The second lesson of the FREE LSAT prep course offered by Insight LSAT. This is a comprehensive course for LSAT preparation, taught by an instructor who scored 179 on the LSAT. We go through every section, providing expert advice, strategies, illustrations of methods, and more!
In this lesson, we discuss fundamental logic skills that will be useful on all sections of the LSAT.
Topics include:
- logical consequence
- logical sequence vs. textual sequence
- the "so" test
- intermediate conclusions
- necessary and sufficient assumptions (conditionals)
- negation
- numerical words and phrases
- symbolic logic
- contrapositives

Опубликовано:

6 авг 2024

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Комментарии : 244

@insightlsat 2 месяца назад

Hi everyone! The original Insight LSAT Prep Course, launched in 2017, is now outdated. I have released a new series of eight videos that is updated for the modern test and incorporates all that I've learned tutoring since I released the original videos almost a decade ago. ru-vid.com/group/PLafC0Olll40wXlcvb3JrIO1jkxuPJvz5D Thank you for all the support over the years. I hope you enjoy the new series. -Albert

@lolo2good 7 месяцев назад

Thank you Lord for the other side of RU-vid …I no longer watch music videos, I must study for the LSAT! This guy is awesome! 🎉2024🎉

@laurynfarley 6 месяцев назад

i’m right with you ! we got this

@lolo2good 5 месяцев назад

@@laurynfarleywe will be lawyers 🎉 GOOD LUCK!!!

@peacesoundsstuff 4 месяца назад

All Aboard, I had to physically get myself to change the habit Let’s crush this test!!!!

@samuelgyan1730 4 месяца назад

Let do it guys and make him proud

@babuton 5 лет назад

the "so" test has busted this shit open for me. thanks!

@aracelianaya7832 5 лет назад

Right!! that made all the difference.

@robertsloan3272 4 года назад

How could anyone dislike this video? It truly lays the foundation for development and improvement in all 3 subjects. Albert is an incredible teacher! Thank you for sharing your knowledge and posting this lesson.

@laurasolomon1522 2 года назад

Have you written your LSAT and how was it ?

@parzer0 Год назад

For me it was his voice. Your comment made me click the dislike button because its very obvious not a presidential or militant voice but one of a kid learning through teaching using his shy microphone skills. I'm sure you aced the logical reasoning.

@damndragonflies Год назад

@@parzer0 for me.. That’s exactly WHY I am sticking around for the next… I love his delivery!! I’m sure if a militant person was explaining all these symbols I might not understand so easily. He doesn’t assume you know anything.

@walabang437 Год назад

@@parzer0you posh bimbo

@SenseiLlama 10 месяцев назад

the people who disliked it sold competing courses. Then got outdone, for free.

@GoodNews-px2im Год назад

The “so rule” is golden! I’ve always been taught that whenever there is a “therefore” find out what it’s there for (finding premises that support or lead to the conclusion).

@chrisbrodie5650 Год назад

Now my goal is 179

@06amaris 4 года назад

You are awesome..thank you so much for this. I have been procrastinating taking the LSAT for many many many years...i am now 40 yrs old and fully committed/motivated to reach my goals. Thank for helping with this journey!!

@MsBdoll87 3 года назад

thanks for sharing. i am 34 and have been the same way...procrastinating. what's the latest on your journey?

@vehement-critic_q8957 Год назад

@@MsBdoll87 I'm 30 here & an ESL that means I'm second speaker of English, so it's a little burdensome as language could be a barrier, but that tutor knows how to guide & show the way to success. & yeah, I'm just like you procrastinating due to circumstances out of my hands.

@LoveLifeAllWays 8 месяцев назад

Wow! I'm at the age now and I'm considering law school. I should have attended right after graduating. Did you attend law school!? If so how is it going?!

@scherretzfamily7196 2 года назад

I made a 144 the first time I took the LSAT just by watching the first couple of these videos. and that is after a trip to Vegas. I made a 136 after paying 1800 for one of those supposed prep courses.... which goes to show you the difference

@chelseaamira6894 Год назад

This video has helped me soooooo much. You can't even begin to understand! This is what everyone should watch before even studying anything for the LSAT. Your teaching style makes it so easy to pay attention to,and understand what I'm learning, thus keeping me fully engaged the whole entire time. Thank you so much I cannot wait to watch the rest.

@withlovestephaniedenise7024 2 года назад

I was told about the LSAT from a lawyer, who told me it'd needed for law school. Soooo, I tried it without knowledge. I was lost. Then I found this video. Wow! I went back to the test, and although, its approach is new to me, I had a better understanding. Thank you,

@coltonstogner4363 4 года назад

Wow youre amazing at explaining these complex logical relationships in a way that anyone can pick up on. Thank you for taking the time to create these videos and making this available for free

@LanaIrsh 10 месяцев назад

I took a diagnostic test before watching this video and was tripping up on some logic games questions because I was spending too much time rereading the conditions and scenario, your methods have helped me so much and made me realize the amount of time I could have saved when doing those logic games.

@KnockOutCutie Год назад

I really enjoyed this lesson your teaching style fits my learning style I’d pay for a whole course

@kristal0076 2 года назад

Hi, I scored 162 on practice test but want to do better. this vid is awesome to get my my crazy thoughts logical!

@ttothemfd 7 лет назад

This is fantastic. Thank you so much! Understanding these symbols and their application is going to help me exponentially

@toksfashable 6 лет назад

Amazing lesson, thank you for taking the time to explain all these to us. I really learnt a lot!

@laminar28 6 лет назад

These videos are excellent, and I suggest anyone looking to raise some points go through the entire lesson plan!

@millicentpepion 4 года назад

OMG.. I"m so excited!! Thank you for putting this together!!

@JacksonDahlen107 5 лет назад

Working through these over the next week. Bless your soul.

@andrerobinson2923 Год назад

I finally caught on and was able to understand it as he went on. I got the majority of them correct. Thank you for explaining it the way you did.

@jinxy_jinx1392 2 месяца назад

im a grade 10 student in legal studies, we are doing a Lsat (for marks) and these videos help a lot thanks!

@ginikaurpropertiesgroup7840 5 лет назад

I love it! Thank you for all the great exercises and help!

@NoeItorious 6 лет назад

This was really fun. Nailed it too. Thanks!

@chrisbrodie5650 Год назад

Thank you for putting this program together. Helps me study the LSAT. I work full time and I hope this works for high scores!!!

@davidndoma9286 2 года назад

I feel pumped after watching this video. Thank you for such a great video.

@SingingDiaries 6 лет назад

This was so so helpful! Thank you for uploading this :D

@carolinan4768 3 года назад

Love the way you teach! Thank you very much! Love this!

@uchechigenevieve7324 Год назад

I have watched a lot of videos, yours is the only one so far that explained thing in a very clear and understandable way.

@lolo2good 7 месяцев назад

Very true! I took a course in college, but all they did was send me some practice books that made no sense until I started watching these videos, but now I will understand my PrepTest books a lot better!

@lolo2good 5 месяцев назад

Same!!!!

@amynguyen6411 7 лет назад

Thank you for making such a great video!

@ScottWitoff-hv1qx 8 месяцев назад

Every lesson Insight LSAT teaches is excellent. I'm watching one of those lessons. I can conclude that I am watching an excellent lesson. 🙂

@ymerithebeloved 2 года назад

this is really helpful and i really like the way you teach. thank you so much!

@syedmammar1 6 лет назад

Learned a great deal. Thank you.

@itswolvesgate Год назад

Best LSAT video I have seen so far thanks 👍👍👍

@quitamartor4314 2 года назад

WOW, thank you so much for these lessons; I've a LSAT to write on Monday July 4. Very sure this would help me 🙏

@hailskay Год назад

how did it go??

@allissberry6959 6 месяцев назад

These videos are very helpful and study tips to help prepare me for the LSAT test. I plan to take it either this year or next year for sure, I hope I do a good job.

@Duckgoose17 3 года назад

Wow I am actually understanding and getting this...Exciting....ty for sharing

@johngivens5004 7 лет назад

Great video got me thinking logically now I'm a keep working at it everyday from now on

@criminalscum8472 5 лет назад

John Givens You can start by practicing basic English grammar.

@nufirmdm 5 лет назад

@@criminalscum8472 shut the fuck up

@anthax1 5 лет назад

my first time trying these out, seems complicated but pretty straight forward with some practice.

@ceciliaaceves6397 4 года назад

Amazing Stuff! It has helped me so much!

@alyssa01825 4 месяца назад

Taking the LSAT this summer, thanks for your course

@damndragonflies Год назад

Thank you…. not sure yet how it applies to the LSAT!! But I appreciate this before I pay for my tutor and take any practice exams!!

@chrisgreen1579 4 года назад

Great resource so far

@Pegalomania 5 лет назад

Very helpful & kind, thank you.

@ikarhbzgahk276 6 лет назад

I took a logic course a couple years ago so this all makes sense to me

@amoontree Год назад

Lol

@elle9633 4 года назад

Excellent! Thank you!

@alesanchez8492 2 года назад

this channel is a gem

@ohandromeda6995 Год назад

At 1:12:00 would writing the symbols (neg)H ---> Q, with the second being (neg)Q ---> H be correct? When speaking out loud I read as If I don't quit, at least one person helped.

@philmascia1424 Месяц назад

I know your post is over a year old, but I was working that question and I thought the same thing you did. Especially, because the Pink Floyd If you don’t eat your meat question was (neg)M-->(neg)P……I wish you had gotten a reply to your comment. .?.

@sadeekwalker6355 7 лет назад

Amazing videos.

@PengNation 7 лет назад

Great video. Watching this after I took a cold diagnostic test and I can see how much of the symbolic representations especially might have been useful during the test. A suggestion: on the slide on numerical proportions, it might be more accurate/clearer to say 50%< than 51%+ etc.

@uria702 6 лет назад

I agree. Change it to >= or

@hard2getitrightagain314 Год назад

This is an important point. There is a lot of territory between 51% and 49%. 50% + 1 is one way I was taught. Even that is too broad. >50% is the most correct, I imagine.

@shrinidhiharwadekar2706 4 года назад

i was so scared for the LSAT exam. Thank you so much sir, this video has made me very easy to study now.

@ruthiyarana9130 6 лет назад

Thank you so much bro

@LucianaFerreiraHervey 2 года назад

Thanks! Your videos are great!!!

@insightlsat 2 года назад

Thank you too!

@Austronesian7 5 лет назад

Thank you so much for the help!!! God bless you!! ❤️

@BoulderBoulder_ 4 месяца назад

I should've watched these videos while I was taking symbolic logic lol. Also, can confirm, symbolic logic was way harder than the material I've seen on the LSAT so far haha

@IsaacWMayer Год назад

You’re my hero! 💯

@petercho7660 5 лет назад

Hi! Thanks for the video. In the example "If many people attend the party, we will need to hire a server", you said the negation is "If we don't need to hire a server, then ..." I was wondering what the implication of "if we don't need to hire a server" is. Does that mean we don't hire any servers, or does it mean that you don't hire A server (either no servers or many servers)?

@kifeda 7 месяцев назад

I'm struggling but this is a really good video. Like excellent.

@hhhsp951 3 года назад

In response to the negation of "If you prepare for the LSAT, you will do well... ", instead of filling in random bubbles and doing well, it might just make perfect sense to you.

@theelizabethanway 6 лет назад

The Tom example...heartbroken Tom..Tom Petty and the Heartbreakers. And LuluLemon....love the puns

@cryptocanada3038 3 года назад

oh wow! I didn't even pick that up. Great eye!

@imranhowcani1981 4 года назад

you just made the introduction easy

@bradcooke5383 Год назад

Good video for LSAT prep. At 58:06 there's a false statement. Echidnas and the duck billed platypus are both mammals and both lay eggs.

@fancydiamondllc4256 2 года назад

Very good practice

@aminaaftab1811 6 лет назад

amazing thank you

@mazinsyed7279 5 лет назад

so when writing counter positives you always have to negate the conjunctions and the disconjunctions from both sides in all cases? correct

@cryptocanada3038 3 года назад

I can't believe how much I love this shit!

@christiancabrera4708 6 лет назад

Amazing

@lucivaniapereira5936 5 лет назад

When can I find more exercises like this one ? I am having trouble negating.

@willonz 3 года назад

@35:11 water can boil if pressure is low enough, too. Does this example assume this as well?

@alexzylka4867 8 месяцев назад

thank you & thanks to RU-vid..

@ScienceTheoryOfficial 11 месяцев назад

So helpful

@AlexanderMahone-sp3zh 5 месяцев назад

OMG, this is gold

@deepthroat533 5 лет назад

Falsifying numerical statements - "a few sandwiches remain." A few may refer to 2+ but it also implies a limit, not many therefore we can say 0 -1 sandwiches or there is an abundance (non-countable but in excessive of a few)

@cecilialaracengiz2848 5 лет назад

Hi, on the practice problems, the one that says "if nobody helps, I am going to quit" you started with H--> Q shouldn't it be a negated -H first since its nobody helps and the negated version would be somebody helped.

@cecilialaracengiz2848 5 лет назад

I really like your videos by the way. They are very helpful.

@hylandbenjamin12 Год назад

Thanks!

@higherlight9668 6 лет назад

thanks for the vid i like it i will get THAT LSAT WOOOO

@napnap609 5 лет назад

In the example of conditionals with "only", I get the first statement "I will attend ONLY if I can afford it, to which you offer a counter thought of: You may not go even if you CAN afford it. Great I get that. But in the boiling water example you don't offer a counter thought. Is there one? "Only if enough heat is applied to it does water boil". So that's definitely a necessary condition, but how is that not sufficient?

@samnunn3948 3 года назад

Would the contrapositive of the Sam Bart Alex portion be; If not Bart ^(and) Alex -> not Walking -> not enough Time v(or) not Sam. ??? Edit: If not B ^ A > not W > not T v S

@dirty_candy 5 лет назад

In the symbols part, you treat "plans to" as "will." How is that going to help?

@dirty_candy 5 лет назад

On the Tom and Erica one. I got "the assumption is that he WILL," when nothing says a plan is the same as execution. Is that the same as saying what you said, that she never said no, because nothing said he never asked her?

@kjaniece 3 года назад

I had a question about the falsifying numerical statements. On the most of the questions, is it possible to say all or because “all” was not used in the PowerPoint prior, it can not be used as an answer? Ex- some children dance translates to “it’s not the case that some children dance. The only answer that was given was 0-1 children dance. Can “all”also be used?

@hhhsp951 3 года назад

I went for NotP instead of C because in this scenario the parade (P) would not have happened if it had rained (R)

@iStorm-my5fp 2 года назад

Thank you

@jayl2331 Год назад

“So test” Very nice!

@Applecompuser 5 лет назад

There was reference to a free worksheet on the website, however, I do not see it. Does anyone know where this worksheet is? PS This is a great video series! Thanks for sharing them. PSS If anyone else is prepping for the LSAT now, I would be happy to do a study group even if by Facetime etc.

@About_Argo 5 лет назад

I know it's late, I hope this is the correct one. www.insightlsat.com/worksheet

@psykored524 6 лет назад

@59:13 when I read that sentence I right away thought of Pink Floyd haha

@AuzSanchez 3 месяца назад

1:11:55 can you explain why you wouldn't negate H in the last question in the initial answer? I negated it because of the word "nobody" and then in the contrapositive there was no negation for H. I hope this makes sense!

@prettynestd 5 лет назад

Very good

@ruqaia9563 7 месяцев назад

for the Q (if nobody helps, I am going to quit) I wrote it as (no H > Q) then the opposite ( 1+ Q > H) meaning I interpret no bady helps as a negative scenario. I'm not sure if it's only another way or it going to affect the result in more complicated situations

@LATHSPELL70 4 года назад

If nobody helps, I am going to quit. H --> Q ¬Q --> ¬H. I put ¬H ---> Q, as in nobody helped (¬H). Is there a logical fallacy that I am not connecting if I do it this way. My contrapositive ended up looking like this: ¬Q -> H (at least one person helped). Seems like I'm saying the same thing, but making sure I didn't miss something.

@ajmalr4790 3 года назад

Same thing I just did in my head!

@r.p.8906 2 года назад

'Nobody helps" is already a negation of Help and so, it will be --, H---> Q contrapositive is --, Q--> H. ( 0-1)

@maxwilk8290 Год назад

52:15 wouldnt if be considered "sufficient but not necessary" condition? Therefore if Jamal is not happy, we still don't know if it is not snowing? wouldn't it need to be Only if it is snowing, Jamal is happy or If and only if it is snowing, jamal is happy. We cannot rotate the argument if it is only a sufficent cause without having an assumption. Correct me if I am wrong.

@emorgan7498 11 месяцев назад

I was searching the comments for this exact question. He lost me there! My thought,I think was a little different. In his first example, "if I don't have a map, I will get lost".. he said I could still get lost with a map. So, in this example, couldn't he be happy even if it's NOT snowing?

@Rm9512 10 месяцев назад

i have a question: in the practice section at the end of the video, in the symbolic logic of "if nobody helps, i will quit..." shouldn't the symbol for help be positive? without the negation symbol? idkw i'm not getting that. would really love to know what i misunderstood!

@chelorecords8483 6 лет назад

what do we do about nor, or neither

@fritzkreig1314 6 месяцев назад

i wrote it as not snowing p or m not at l is that the same as no p or m if no snow?

@treynoe4934 Год назад

In the conditionals sections can someone explain what he means by Sufficient and Necessary conditions? I understand necessary, but the definition of sufficient was muddied by the "if and only if" conditionals

@maleekielshamsa513 3 года назад

1:06:00 Please advise Why is it not Jan or Kyle instead of Jan and Kyle? Since it was originally a disjunction??

@lordvader5246 3 года назад

I have a question regarding the conditional "only" example of: "only if enough heat is applied to it does water boil." This might be a matter of interpretation but when I read "enough heat" im assuming its suggesting that there is "enough heat to get water to boil" in which case applying "enough heat" to water to get it to boil would make it both necessary and sufficient to get water to boil which would make it an "if and only if" statement as opposed to an "only" statement. Can someone explain why I am wrong or if I just interpreting this differently? He didnt spend a lot of time answering that example.

@kmcken0001 Год назад

I am confused about this too, does anyone have an explanation?

@simsimmons8884 2 года назад

Question. At 9:34 you present the "so test" on the paragraph regarding taking the LSATs. I see another conclusion as "so, practicing LSAT questions is an effective way of improving your LSAT score." Why is this not the conclusion? This seems as logical as "so, time spent practicing LSAT questions is thus time well spent." It seems that the only indicator to pick one over the other is that " time spent practicing LSAT questions is thus time well spent." is a more general conclusion. Is this test something that should be added to the final determination of which conclusion is the final conclusion? The more general the conclusion, the more final it is.

@AlliYAFF 3 года назад

Wait...the whole "some" thing seems to contradict most of what I have learned in logic. Wouldn't it be apt to say that "some students passed the exam" even if only one student did?

@abracadabra2395 5 лет назад

Questions: 1. Isn't the missing piece the assumption that Tom will ask her out, not that she will say no if he does? The former isn't explicitly stated, while the latter is. 2. The Lu sisters could own a lemon tree and the entire argument could be junk. This feels like a more blatant missing logic leap than the one you pointed out with Tom's broken heart. What am I not understanding? (Also, thank you for these videos!!)