The phrase "an increase in difficulty" is correct and usable in written English.
It can be used when discussing a situation, task, or challenge that is becoming more challenging or harder to manage.
Example: "As the project progressed, we noticed an increase in difficulty, requiring us to adjust our strategies."
Alternatives: "a rise in difficulty" or "a growing challenge".
All subtests presented an increase in difficulty as the number of to-be-remembered items raised, and showed high Cronbach's α values.
The progressive improvement in the quality of scientific articles has led to an increase in difficulty in reading and interpreting them so that now clinical knowledge and experience must be complemented by methodological, statistical and computer skills.
These additional variables lead to an increase in difficulty.
However, with the increase in networked applications, there has also been an increase in difficulty to manage and secure these networks.
Foreigners have long gone out of their way to come to the U.S. for the best medical care, and despite an increase in difficulty obtaining visas post Sept. 11, 2001, they continue to do so.
However, with an increase in function comes an increase in difficulty and danger.
Also, an increase in the difficulty of the task (using an incongruent hand to respond) affected performance more strongly in experimental conditions that required making inferences.
This technique allows the conoid and trapezoid ligaments to be emulated, and has shown biomechanical advantages [12], but there is also an increased risk of fracture of the clavicle during the construction of two tunnels and an increase in technical difficulty [5].
Furthermore, increased severity of the predicted consequences leads directly to an increase in the difficulty of making decisions and in the emergence of negative emotions [20] [22].
We chose this task because it allows an increase in the difficulty of the simulated movements simply by manipulating the orientation of the visual stimuli.
Given that an increase in task difficulty can lead to an increase in AB magnitude, the slightly lower T1 performance may thus be a potential explanation for the non-blinkers' blink in the picture task.
