Lisa fears she is losing her intelligence when she learns about the fabled Simpson gene. Meanwhile, Jasper freezes himself in the Kwik-E-Mart freezer.



(created by), (developed by) | 3 more credits »


Episode cast overview:
Homer Simpson / Grampa Simpson / Kenny / Man at Jazz Hole / Rich Texan / Male Simpson Relatives (voice)
Marge Simpson (voice)
Lisa Simpson (voice)
Apu Nahasapeemapetilon / Dr. Nick Riviera / Chief Wiggum / 'When Buildings Collapse' Narrator / Technician (voice)
Principal Skinner / Jasper / Dr. Hibbert / FOX Announcer / Channel 6 Announcer / Otto / Station Manager / Kent Brockman (voice)
Edna Krabappel (voice)
Troy McClure (voice)
Violinist / Dr. Simpson / Environmental Lawyer Simpson (voice)
Miss Hoover / Architect Simpson / Sales Coordinator Simpson (voice)
Martin Prince (voice)


Lisa fears she is losing her intelligence when she learns about the fabled Simpson gene. Meanwhile, Jasper freezes himself in the Kwik-E-Mart freezer.

Plot Summary | Plot Synopsis

Plot Keywords:

2d animation | See All (1) »


Animation | Comedy


TV-PG | See all certifications »




Release Date:

8 March 1998 (USA)  »

Company Credits

Show detailed on  »

Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
See  »

Did You Know?


DVD Easter Egg: Season 9, Disc 3. When Lisa hold up the puzzle on the back of her lunch (near the beginning of the episode), press the number 6 on your DVD remote to unlock a full episode length commentary from Bill Oakley and Josh Weinstein. They discuss their time spent working on the show, and address a few important issues. See more »


Homer Simpson: I rounded up every Simpson in the tri-city area so I can prove to you there's nothing wrong with the Simpson genes. This is your great uncle Chet. Go ahead, Chet, tell her what you do.
Great Uncle Chet: I run an unsuccessful shrimp company.
Homer Simpson: [nervously] Oh... but you *run* it, right?
Great Uncle Chet: [smugly] Oh, yeah.
Homer Simpson: Okay... uh, this is your second cousin, Stanley!
Cousin Stanley: Um, I shoot birds at the airport.
Homer Simpson: [More nervously] Everybody hates birds, right?
See more »


Referenced in The Simpsons: Hit & Run (2003) See more »


1812 Overture
Composed by Pyotr Ilyich Tchaikovsky
See more »

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User Reviews

Slow, Different Episode,
9 September 2015 | by (Ireland) – See all my reviews

Lisa the Simpson is a great Simpsons episode with a well written storyline and plenty of very funny moments. It's a very slow episode that is very dialogue based and dosen't rely a whole lot on story, but more so on characters, and the performances of the voice actors are very important here, thankfully they all did a great job. It's definitely a weaker episode in the ninth season, with very exciting episodes like the City of New York vs Homer Simpson and Trash of the Titans, this one dosen't deliver as much entertainment or high energy as they do. The scene towards the end in which we are introduced to several new Simpsons family members is outstanding, it's a ton of fun and the best few minutes of this episode, all of the once off characters are hilarious and I would have no problem with seeing them again some day. While it's definitely not as interesting as other parts of the ninth season, Lisa the Simpson is still an enjoyable Simpsons episode.

Lisa fears she is losing her intelligence when Grampa informs her on the family's history with school grades.

If you have any recommendations on films/TV series I should watch or review,or any questions to ask me,just tweet me @DillonTheHarris

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