The phrase "and the assertiveness of" is correct and usable in written English.
It can be used when discussing the quality or degree of assertiveness in a particular context, such as communication, behavior, or leadership.
Example: "The success of the negotiation depended on the clarity of the message and the assertiveness of the spokesperson."
Alternatives: "and the confidence of" or "and the decisiveness of".
These tensions still remain today, ten years on, despite Iraq's relative stabilization and the assertiveness of the Iraqi army and security forces.
The resulting monumental collection, spread liberally around the campus, is inevitably uneven in style, reflecting mainly experimental artists at the peak of their maturity, but quite liberating in its abstraction and the assertiveness of strong personalities.
Almost every one we tried was superb, starting with a cucumber soup in the palest shade of green — a little chamber symphony of contrasting yet complementary flavors, combining the midsummer taste of cucumber, the mellowness of yogurt and the assertiveness of raw garlic.
The most famous of these, the Choragic Monument of Lysicrates, which used to be called the "Lantern of Demosthenes," represents a transitional phase; its inscribed dedication falls between the anonymity (actually more pretended than real) of the corporatist benefactions of Classical Athens and the assertiveness of Hellenistic Greece with its emphasis on individual generosity.
Power inequalities and the assertiveness of society members decrease the number of possible business opportunities.
In the first three studies, the MBA students were paired up to do a mock negotiation over licensing rights, after which each participant answered questions about their own assertiveness and the assertiveness of their counterpart.
If swearing, betting and a passion for the turf are to be taken as the hallmarks of our nationality, the young English Jew… must be allowed to be British to the core".And the assertiveness of the second generation is not always a bad thing.
Emperor Gaozong supported settling a peace treaty with the Jurchens and sought to rein in the assertiveness of the military.
Tonight the Americans labored to put away a flurry of chances provided by the assertiveness of Milbrett and the passing of Mia Hamm and escaped with a shutout victory after a smothering save in the 60th minute from goalkeeper Siri Mullinix.
However, as patient handovers seemed to rely substantially on the assertiveness of patients and their families, patients with lower health literacy, language barriers and lack of family resources may be at higher risk of being exposed to safety incidents.
