Nonlinear Dynamics, Psychology, and Life Sciences, Vol. 21, Iss. 2, Apr, 2017, pp. 129-141 @2017 Society for Chaos Theory in Psychology & Life Sciences Dynamical Systems Theory in Quantitative Psychology and Cognitive Science: A Fair Discrimination between Deterministic and Statistical Counterparts is Required Abstract: This article addresses a set of observations framed in
both deterministic as well as statistical formal guidelines. It operates
within the framework of nonlinear dynamical systems theory (NDS). It
is argued that statistical approaches can manifest themselves ambiguously,
creating practical discrepancies in psychological and cognitive data analyses
both quantitatively and qualitatively. This is sometimes termed in literature
as 'questionable research practices.' This communication points to the demand
for a deeper awareness of the data 'initial conditions, allowing to
focus on pertinent evolution constraints in such systems.' It also considers
whether the exponential (Malthus-type) or the algebraic (Pareto-type)
statistical distribution ought to be effectively considered in practical
interpretations. The role of repetitive specific behaviors by patients
seeking treatment is examined within the NDS frame. The significance of
these behaviors, involving a certain memory effect seems crucial in determining
a patient's progression or regression. With this perspective, it is discussed
how a sensitively applied hazardous or triggering factor can be helpful
for well-controlled psychological strategic treatments; those attributable
to obsessive-compulsive disorders or self-injurious behaviors are recalled in
particular. There are both inherent criticality- and complexity-exploiting
(reduced-variance based) relations between a therapist and a patient that
can be intrinsically included in NDS theory. Keywords: dynamical systems theory, initial conditions, deterministic vs. statistical, exponential distribution, power law |