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Nancy Segal

Nancy Segal

American psychologist

Sep 12, 2026

10:39
And he achieved it, felt fantastic for a day or two, then emptiness, okay, what's next? So how come I don't feel like I'm okay? How come this hasn't filled that hole? You know, so yeah, I'm interested in that.
10:53
Yeah, what you're describing is something that the literature has addressed.
10:58
And we find that success is often met with great glee initially, but it's fleeting.
11:07
And it can serve as a motivation for finding a new project.
11:11
Now with athletes, it may be more limited within the athletic scope, but outside athletics, there may be many, many things they can do.
11:19
I know in my own case, when I finish something, there's a feeling of elation, but then there's this emptiness and I have to go on to another project.
11:28
And I suspect it's that way with many people, especially if they work so hard.

8 MINS LATER

19:57
While we're on that note, can you, you know, you touched on it before, can you give me a bit more background on just your story and how you actually decided to go down this path? Obviously, like you said, you, you know, you're a twin, but what, what led you down this path? Uh, yeah.
17:15
Ladies and gentlemen, Nancy Siegel.
17:21
Good evening.
17:22
So when I told a colleague that I was participating in this debate, he said to me, you can't win, because parents believe that what they do makes an incredible difference in the lives of their children.
17:33
But as my colleague Dr. Plowman pointed out, DNA is the key driving force behind how children turn out to be as individuals.
17:44
Children are not blank slates.
17:46
They come into the world with genetic predispositions that parents respond to and do not create.
17:52
People know this concept, but it's often lost when it comes to parenting.

55 MINS LATER

73:11
And now to make her closing statement in support of the resolution, Professor of Psychology and Director of the Twin Study Center at California State University Fullerton, Nancy Siegel.
36:37
Years later, they were studied as adults in a study you, Nancy, know well because you took part in the study.
36:43
study.I can tell you a lot about the Jim twins.
36:46
The Jim twins were in the state of Ohio.
36:49
They were born about, about 40, 50 miles apart in different cities.
36:54
That's where they grew up.
36:55
And then when they met at the age of 39, they discovered a whole long list of similarities in addition to their first names.
37:02
They both had mixed headache syndromes when they were teenagers.

9 MINS LATER

46:19
Uh, w- what difficulties have the twins faced in accessing them, and why does the public have to wait so long to see them?
11:11
Yeah.
11:12
But now we're able to treat this.
11:13
So, at any rate, people began to see differences between different breeds of dogs, different mouse strains.
11:19
You could train an animal, for example, to avoid noxious noises when you paired it with food.
11:26
But when you paired it with something else, it wouldn't work.
11:27
So, people began to see the constraints on the environment, it just wasn't a full explanation.
11:32
Then there was a case study of reared apart twins done by Paul Popenoe in, I think, the 1920s.
speaker_5UNKNOWN
12:37
Yeah.

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