The South American countries with an IC of around 0.6 are the ones that exhibit more persistence, which is usually attributed to the existence of pervasive borrowing constraints to finance children's education.
By interacting with extremely large frugivores, these fruit species might have escaped the pervasive size constraints that may keep seed size below a certain threshold value so that it does not compromise dispersal ability.
Despite the fact that the SAT reveals a pervasive and fundamental constraint in information processing, its neurobiological underpinnings are not yet understood.
For example, Gong Xian, a Nanjing artist whose budding political career was cut short by the Manchu conquest, used repetitive forms and strong tonal contrasts to convey a pervasive feeling of repressive constraint, lonely isolation, and gloom in his landscapes (most impressive is his Thousand Peaks and Myriad Ravines in the Rietberg Museum, Zürich, Switzerland; C.A. Drenowatz Collection).
What stands out is the acceptance of loss, reduced circumstances, constraints and even pervasive loneliness.
This culturally adopted 'resigned fatalism' is prominent in contexts in which people have had to become resilient and adaptive to system shortfalls, but were so pervasive that narratives exposing these constraints were at first easily overlooked.
The point is that neither the use of connectionist architecture alone nor the use of classical architecture alone enforces a strong enough constraint to explain pervasive systematicity.
The third related to time constraints, which was a pervasive factor across all aspects of communicating screening test information.
In contrast, whether evolutionary constraints exist, and how pervasive they are has been an important and controversial topic in evolutionary biology.
