"desirable effect" is correct and usable in written English.
You can use this phrase when you want to talk about something that having a positive result or outcome. For example, "We are hoping for a desirable effect from the new policy."
Livia may have been sociopathic, but that is not the most desirable effect.
Most of this distortion is deliberate and a desirable effect of the stance of policy.
But Redding and Shaw said the added ejection and subsequent suspension had had a desirable effect.
The placing of a bag over the suspects' head also has another highly desirable effect: it makes them all look guilty.
If we were looking at the emergence of speculative forces, which clearly were evident in very early stages, then I think we had a desirable effect".
It should hardly need stating that, ordinarily, liability in damages for unconstitutional or otherwise illegal conduct has the very desirable effect of deterring such conduct.
And even this isn't that helpful, because in our experience what actually happens is that the surface just gets slightly mushy — not a desirable effect.
But the commodity boom has started to have a less desirable effect: soaring food and fuel prices are pushing inflation up across the region.
Ultimately, this may be the most desirable effect of all for boycotters: a behavior change that extends far beyond a company's short-term profits or a dip in its stock price.
Now compare that rendering of a black man as constantly complaining, weak, and in need of his (more seriously injured) white boss's help with another of Hemingway's manipulations of racial tropes — this time for erotic, highly desirable effect.
Continuous professionalisation of safety management in European railways does not always have a desirable effect on lowering the risk to the tolerable level.
