If he is re-elected, former President Donald Trump, now 78 years old, would be the oldest

president ever elected. After a number of appearances where his remarks were rambling or incoherent,

and one event in which he swayed silently to music

on stage for close to 40 minutes, questions are being raised about possible

cognitive decline. Here are a couple of recent events that sparked concern. The first one in which he began talking about electric vehicles, then switched to a story about an electrically powered boat.

Let's see your boat goes down and I'm sitting on top of this big powerful battery and the

boat's going down. Do I get electrocuted? And he said, you know what?

Honestly, nobody's ever asked me that question.

But if I'm sitting down and that boat's going down and I'm on top of a battery,

and the water starts flooding in.

I'm getting concerned. But then I look 10 yards to my left and

there's a shark over there. So I have a choice of electrocution or a shark. You know what?

I'm going to take? Electrocution. I will take electrocution every single time.

Let's listen to Pavarotti sing Ave Maria.

Can you hear that? A Bue Maria.

Young. Young, There's no need to be. Young man.

There's no need to feel down.

I said young man.

Pick yourself off the ground.

I said young man.

Mr. Trump has dismissed any speculation about mental decline, describing his rambling rhetoric as him weaving together different topics and saying his supporters get it.

Let's take a look at some of these questions with an author and clinical psychologist

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