Birth
weight
is
a
widely
used
indicator
of
prenatal
experiences
in
models
the
developmental
origins
cognitive
ability
across
lifespan.
We
modeled
change
strength
association
between
birth
and
sample
twins
(n
=
1,501;
53.1%
female;
91.1%
White)
followed
prospectively
from
infancy
to
midlife.
The
magnitude
declined
exponentially
(B
.59,
p
<
.05)
midlife
.27,
.05).
A
1-kilogram
increase
was
associated
with
an
8.85-point
scores
at
3
months
4.05-point
advantage
after
about
2.5
years.
Biometric
regression
revealed
that
shared
environmental
factors
accounted
for
decline
ability.
small,
positive
within-pair
persisted
into
Findings
support
origin
Intelligence,
Journal Year:
2023,
Volume and Issue:
97, P. 101730 - 101730
Published: Feb. 9, 2023
Mental
abilities
and
physical
growth
are
important
determinants
of
health
across
the
lifespan.
Here,
stability
these
traits
was
assessed
from
6
months
to
65
years
age
investigate
periods
malleability.
abilities,
height,
weight
were
at
11
time-points
in
participants
Zurich
Longitudinal
Studies.
Individuals
with
more
than
three
missing
data
points
per
trait
assessment
(i.e.,
approx.
25%
data)
excluded
further
analyses
(final
N
=
281).
Bivariate
cross-time
correlations
showed
that
mental
low
infancy
gradually
increased.
The
measures
uniform
development,
height
being
highly
stable
moderately
so.
When
a
latent
model
used,
overall
approached
weight.
findings
indicate
malleability
development
differ
between
measures.
This
requires
consideration
interventions
targeting
as
facilitators
for
improving
outcomes.
Child Development,
Journal Year:
2021,
Volume and Issue:
93(1)
Published: Nov. 11, 2021
Abstract
This
study
investigated
the
systematic
rise
in
cognitive
ability
scores
over
generations,
known
as
Flynn
Effect
,
across
middle
childhood
and
early
adolescence
(7–15
years;
291
monozygotic
pairs,
298
dizygotic
pairs;
89%
White).
Leveraging
unique
structure
of
Louisville
Twin
Study
(longitudinal
data
collected
continuously
from
1957
to
1999
using
Wechsler
Intelligence
Scale
for
Children
[WISC],
WISC–R,
WISC–III
ed.),
multilevel
analyses
revealed
between‐subjects
Effects—as
both
decrease
mean
upon
test
re‐standardization
increase
cohorts—as
well
within‐child
Effects
on
growth
age.
Overall
gains
equaled
approximately
three
IQ
points
per
decade.
Novel
genetically
informed
suggested
that
individual
sensitivity
was
moderated
by
an
interplay
genetic
environmental
factors.
Child Development,
Journal Year:
2024,
Volume and Issue:
95(4), P. 1367 - 1383
Published: Feb. 1, 2024
This
study
tested
phenotypic
and
biometric
associations
between
physical
cognitive
catch-up
growth
in
a
community
sample
of
twins
(n
=
1285,
51.8%
female,
89.3%
White).
Height
weight
were
measured
at
up
to
17
time
points
birth
15
years,
ability
was
assessed
16
3
months
years.
Weight
length
positively
associated
with
abilities
infancy
adolescence
(r's
.16-.51).
More
rapid
slower,
steadier
growth.
Shared
nonshared
environmental
factors
accounted
for
positive
size
outcomes.
Findings
highlight
the
role
prenatal
experiences
co-development.
Developmental Psychology,
Journal Year:
2021,
Volume and Issue:
58(3), P. 535 - 550
Published: Dec. 9, 2021
Twins
regularly
score
nearly
a
standard
deviation
below
the
population
mean
on
standardized
measures
of
cognitive
development
in
infancy
but
recover
to
by
early
childhood,
making
rapid
gains
through
toddler
years.
To
date,
only
polynomial
growth
models
have
been
fit
model
recovery
across
limiting
applicability
parameters
later
developmental
periods.
We
nonlinear
asymptotic
Gompertz
prospective
scores
from
1,153
individual
twins
578
families
(47.9%
male,
91.5%
White,
61.6%
monozygotic)
measured
at
16
time
points
between
3
months
and
15
displayed
lower
asymptote
86.47
(.90
SD
mean)
gained
average
17.01
points,
achieving
an
upper
103.48.
Growth
was
observed
be
most
3.26
years,
highlighting
importance
years
development.
Biometric
analyses
revealed
that
shared
environmental
factors
accounted
for
majority
variance
initial
ability
as
well
ability.
Gestational
age
family
socioeconomic
status
(SES)
were
robust
predictors
growth.
Results
present
study
provide
insight
into
processes
underlying
children
evincing
slight
delays
their
In
particular,
findings
highlight
prenatal
economic
resources
important
aspects
environment
(PsycInfo
Database
Record
(c)
2022
APA,
all
rights
reserved).
Frontiers in Clinical Diabetes and Healthcare,
Journal Year:
2023,
Volume and Issue:
4
Published: March 17, 2023
Background
Comorbidity
between
depression
and
type
2
diabetes
is
thought
to
arise
from
the
joint
effects
of
psychological,
behavioral,
biological
processes.
Studies
monozygotic
twins
may
provide
a
unique
opportunity
for
clarifying
how
these
processes
inter-relate.
This
paper
describes
rationale,
characteristics,
initial
findings
longitudinal
co-twin
study
aimed
at
examining
biopsychosocial
mechanisms
linking
risk
in
mid-life.
Methods
Participants
Mood
Immune
Regulation
Twins
(MIRT)
Study
were
recruited
Mid-Atlantic
Twin
Registry.
MIRT
consisted
94
individuals
who
do
not
have
baseline,
representing
43
twin
pairs
(41
dizygotic),
one
set
triplets,
5
whose
did
participate.
A
broad
variables
assessed
including
psychological
factors
(e.g.,
lifetime
history
major
(MD));
social
stress
perceptions
experiences);
,
indicators
metabolic
BMI,
blood
pressure
(BP),
HbA1c)
immune
functioning
pro-
anti-inflammatory
cytokines),
as
well
collection
RNA.
re-assessed
6-month
later.
Intra-class
correlation
coefficients
(ICC)
descriptive
comparisons
used
explore
variation
social,
across
time
within
pairs.
Results
Mean
age
was
53
years,
68%
female,
77%
identified
white.
One-third
had
MD,
18
sibling
sets
discordant
MD.
MD
associated
with
higher
systolic
(139.1
vs
132.2
mmHg,
p=0.05)
diastolic
BP
(87.2
vs.
80.8
p=0.002)
IL-6
(1.47
0.93
pg/mL,
p=0.001).
HbA1c,
or
other
markers.
While
characteristics
co-twins
significantly
correlated,
all
within-person
ICCs
than
within-pair
correlations
HbA1c
ICC=0.88
ICC=0.49;
ICC=0.64
within-pair=0.54).
Among
substantially
markers,
but
positively
stress.
Conclusions
studies
potential
clarify
diabetes,
recently
completed
processing
RNA
samples
permits
future
exploration
gene
expression
mechanism.
This
study
tested
phenotypic
and
biometric
associations
between
physical
cognitive
catch-up
growth
in
a
community
sample
of
twins
(n
=
1,285,
51.8%
female,
89.3%
White).
Height
weight
were
measured
at
up
to
17
time
points
birth
15
years
ability
was
assessed
16
3
months
years.
Weight
length
positively
associated
with
abilities
infancy
adolescence
(r’s
.16-.51).
More
rapid
slower,
steadier
growth.
Shared
nonshared
environmental
factors
accounted
for
positive
size
outcomes.
Findings
highlight
the
role
prenatal
experiences
co-development.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Biological
aging
is
a
rapidly
growing
area
of
research,
which
entails
characterizing
the
rate
independent
an
individual’s
chronological
age.
In
this
review,
we
analyze
results
biological
research
in
435
papers
published
twelve
year
window,
revealing
changing
patterns
molecular
markers
use
over
time,
and
development
novel
metrics
aging.
We
further
identify
consistent
discordant
findings,
as
well
areas
potential
future
focusing
on
questions
measurement
with
methylation
or
biomarker-based
assessment
other
variables
relevant
to
study
medRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 2, 2024
Abstract
Objectives
This
review
aims
to
provide
a
comprehensive
examination
of
biomarkers
and
interdisciplinary
variables
related
aging.
Methods
scoping
included
studies
which
involved
adult
participants,
reported
on
the
relationship
between
any
biomarker
or
biological
age
with
chronological
age.
Results
After
screening,
447
articles
met
selection
criteria.
were
categorized
into
10
distinct
categories
through
an
iterative
process.
Conclusions
contributes
information
regarding
influences
rate
Telomere
length
was
most
commonly
examined
biomarker,
Horvath’s
353-CpG
Pan-Tissue
clock
common
clock,
both
demonstrating
strong
consistent
The
demonstrated
relationships
aging
varying
strengths
consistencies.