Show blog entry image on “content-single.php” page

Hi,

I’d like to include the post’s image on the general blog page – the one where one can see all blog posts.

I’ve included this

<?php
if ( has_post_thumbnail() ) {
	the_post_thumbnail('full');
}
?>

on the “content-large.php”, where it works well. But it won’t do it on “content-single.php”, which is the one being called for the general overview over the blog posts.

Can someone give me a hint how to achieve that?

Thanks a lot for any hints!

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