The phrase 'displayed a tendency' is valid and can be used in written English.
You can use this phrase to describe an inclination or behavior pattern someone or something is exhibiting. For example: "The student displayed a tendency towards procrastination when considering her assignments."
He early displayed a tendency to act over the heads of his ministers, especially in regard to foreign affairs.
Fulham had no-one capable of threatening the Spaniard's command and disturbingly, while Arsenal grafted, some home players displayed a tendency to argue with each other.
Despite Cohen's considerable talent for espionage, he displayed a tendency for carelessness, ignoring his Israeli handlers' warnings against sending radio transmissions too frequently or always at the same time of day.
The channels displayed a tendency to return to their morphology and dynamic from before the training.
According to the powder properties of the mid-layer substances, Form A, which had higher porosity and lower density than Form B, displayed a tendency of layer separation.
But what really stood out is that users from the same country displayed a tendency to download the same types of content.
"An inexperienced leader like Kim can often display a tendency for overtly dramatic and brash moves... and for me the situation looks quite worrisome," he added.
As a child, he was said to display a tendency toward spirituality and unusual intelligence, which he expressed through music, dance and the arts.
In this regard, the BBC-PBS "Wallander" displays a tendency shared by AMC's "Killing": an emphasis on what might be considered stereotypically "Scandinavian" attributes like starkness, silence, darkness and angst that goes far beyond the actual Scandinavian productions.
The nanocar displays a tendency toward slipping on the graphyne surface within 2 ps of simulation time movement.
Every being displays a tendency toward the conservation of its own life and for this purpose is endowed, in varying proportions, with sense.
