The Simpsons (1989– )
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Lisa the Simpson 

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.


Susie Dietter


Matt Groening (created by), James L. Brooks (developed by) | 3 more credits »


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Episode cast overview:
Dan Castellaneta ... Homer Simpson / Grampa Simpson / Kenny / Man at Jazz Hole / Rich Texan / Male Simpson Relatives (voice)
Julie Kavner ... Marge Simpson (voice)
Nancy Cartwright ... Bart Simpson / Nelson Muntz / Ralph Wiggum / Billy (voice)
Yeardley Smith ... Lisa Simpson (voice)
Hank Azaria ... Apu Nahasapeemapetilon / Dr. Nick Riviera / Chief Wiggum / 'When Buildings Collapse' Narrator / Technician (voice)
Harry Shearer ... Principal Skinner / Jasper / Dr. Hibbert / FOX Announcer / Channel 6 Announcer / Otto / Station Manager / Kent Brockman (voice)
Phil Hartman ... Troy McClure (voice)
Pamela Hayden ... Milhouse Van Houten / Jimbo Jones (voice)
Tress MacNeille ... Violinist / Dr. Simpson / Environmental Lawyer Simpson (voice)
Maggie Roswell ... Miss Hoover / Architect Simpson / Sales Coordinator Simpson (voice)
Russi Taylor ... 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


Animation | Comedy


TV-PG | See all certifications »

Did You Know?


The Simpsons' family members that showed up took some time to be made, but the staff enjoyed the results. All of the male Simpson family members that showed up were voiced by Dan Castellaneta, the voice of Homer. He had asked for the recording tape to be run for about 20 minutes, so he could do many different voice variations that would fit the different men, but still be close to Homer's voice. See more »


It's made obvious from The Simpsons: Homr(#12.9) that the Simpsons gene has not affected Homer. 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?
[Homer frantically looks for a successful relative and spots a dapper man smoking a cigar.]
Homer Simpson: You...
See more »

Crazy Credits

The episode has a 1997 copyright date, despite airing in 1998. This is presumably due to the fact it was a holdover episode with Bill Oakley and Josh Weinstein as show-runners, who by 1998 had already left The Simpsons to work on Mission Hill. See more »


References Alice Doesn't Live Here Anymore (1974) See more »


That's The Way (I Like It)
Written by Harry Wayne Casey and Richard Finch
Performed by KC & The Sunshine Band
See more »

User Reviews

Slow, Different Episode,
9 September 2015 | by lesleyharris30See 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.

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Release Date:

8 March 1998 (USA) See more »

Filming Locations:


Company Credits

Show more on IMDbPro »

Technical Specs

Sound Mix:

Dolby | Dolby SR (seasons 3-19)



Aspect Ratio:

1.33 : 1
See full technical specs »

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