Concentration. A small-╉ space ad with one large element in it will get more attention than a large-space ad with no large element in it. For example, a small press ad with a bold headline ‘How to...

Concentration. A small-╉ space ad with one large element in it will get more attention than a large-space ad with no large element in it. For example, a small press ad with a bold headline ‘How to be happier’ will be more eye-catching than a large article next to it without a headline.