What is true about the action of the Pelham compared to a double bridle?

The action of a Pelham bit does mimic certain aspects of the combination of a bridoon and Weymouth found in a double bridle. This is due to the design of the Pelham, which features two distinct sets of reins that can provide both direct and leverage action. When the rider uses the Pelham, they can apply pressure in a manner similar to how a Weymouth bit provides curb action while also maintaining the direct rein effect akin to that of a bridoon.

In contrast, a double bridle uses two bits (the bridoon and the Weymouth) to enable a rider to have more nuanced control and a variety of rein options. However, the Pelham allows for a simplifying of this action, making it easier especially for less experienced riders or those who prefer a single bit for convenience.

The other options do not adequately capture the action characteristics of the Pelham compared to a double bridle. For instance, the Pelham does not lack an effect on head carriage, and it actually provides fewer pressure points than the more complex double bridle due to its single bit structure. Additionally, the Pelham can be quite effective in controlling the horse’s movement when used correctly, contrary to the suggestion that it is less effective