The estimation of power in two-level models used to analyze data that are hierarchically
structured is particularly complex because the outcome contains variance at two levels that …

There are multiple observations around the globe showing that in many avian species, both
the timing of migration and breeding have advanced, due to warmer springs. Here, we …

This paper augments the technology acceptance model (TAM) by empirically investigating
the influence of behavioral traits (privacy concerns and trust) and cognitive beliefs …

The R package SIMR allows users to calculate power for generalized linear mixed models
from the LME4 package. The power calculations are based on Monte Carlo simulations. 2. It …

Growing interest in proximate and ultimate causes and consequences of between‐and
within‐individual variation in labile components of the phenotype–such as behaviour or …

Having recognized that variation around the population-level “Golden Mean” of labile traits
contains biologically meaningful information, behavioural ecologists have focused …

Habitat fragmentation, an important element of current global change, has profound
repercussions on population and species extinction. Landscape fragmentation reduces …

Nested data structures are ubiquitous in the study of ecology and evolution, and such
structures need to be modelled appropriately. Mixed‐effects models offer a powerful …

Animal 'personality', defined as repeatable inter-individual differences in behaviour, is a
concept in biology that faces intense controversy. Critics argue that the field is riddled with …

Behavioural and cognitive processes play important roles in mediating an individual's
interactions with its environment. Yet, while there is a vast literature on repeatable individual …